Several physical implementations which approximate two-level systems to various degrees were successfully realized.

Several implementations are currently available.

Several vendors ( Cisco, Juniper, Alcatel-Lucent, Huawei, Quagga ), now implement the below two extensions to stub and NSSA area and although not covered by RFC they are considered by many to be standard features in OSPF implementations.

Several Virtual Machine Monitor implementations initialize the storage with zeros before providing it to the virtual machine that is in operation.

Several partial implementations of D exist, including:

* Several implementations of Small-C

Several commercial implementations of Open Firmware have been released to the Open Source community in 2006, including Sun OpenBoot, Firmworks OpenFirmware and Codegen SmartFirmware.

Several modern runtime environments, such as Microsoft's. NET Framework and most implementations of Java, rely on JIT compilation for high-speed code execution.

Several well-tested and efficient implementations of MPI include some that are free and in the public domain.

Several implementations of the language are capable of running as an Application Server like Citrix, and connecting to remote databases through a data manager.

Several implementations also start a basic HTTP server on port 5800 + N to provide a VNC viewer as a Java applet, allowing easy connection through any Java-enabled web browser.

Several implementations of external bearings have been brought to market.

Several open source implementations are available including Fluere ( Cross-platform GUI in C ++), URAPIV and mpiv ( a MATLAB Toolbox ), PyPIV ( an implementation in Python ), JPIV ( a Java implementation ), OSIV and Gpiv ( both implementations in C ).

Several cross-platform frameworks provide dynamic array implementations for C: and in Core Foundation ; and in GLib.

Several replacement init implementations have been written which attempt to address design limitations in the standard versions.

Several GPU implementations of the algorithm in NVIDIA's CUDA C platform are also available.

Several implementations exist in the form of 3D video players, that render conventional 2D video in anaglyph 3D, as well as in the form of 3D video converters, that transform video into stereoscopic anaglyph and transcode it for playback with regular software or hardware video players.

Several implementations have been deployed in various applications including HEP, HENP, ESG as well as new application domains, such as Fusion simulation, biology, and others.

Several implementations of the TV-Anytime specifications exist among broadcasters, EPG operators, press guide printers, etc.

Several such tailorings are collected in Common Locale Data Repository.

Several stations have been rebuilt to deal with overcrowding: Clapham Common and Clapham North on the Northern line are the last remaining stations with a single narrow platform with tracks on both sides.

Several other Lisp dialects were also in use, and the need to unify the community resulted in the modern Common Lisp language.

Several dolphins ( Bottlenose, Common, Dusky ) frequent the area along with killer whales and the endemic Hector's Dolphins.

Several parks and beaches dot the city, including Plum Island Point Beach, Simmons Beach, Joppa Park, Waterfront Park, Woodman Park, Cashman Park, Moseley Pines Park and Atkinson Common and March's Hill Park.

Several features are still visible including a bridge that once carried the Edford to Stratton Common road over the canal and an aqueduct at Coleford, with two semi-circular arches nearly across and a similar height.

Several gulls have been known to predate pelican eggs and nestlings ( including Herring, Ring-billed and California Gull ), as well as Common Ravens.

Several species have been introduced to areas like North America, Australia, South Africa and New Zealand, especially the Common Myna which is often regarded as an invasive species.

Several of his renderings were published in one of the first printed books to use lithography, Cadwallader D. Colden's Memoir, Prepared at the Request of a Committee of the Common Council of the City of New York, and Presented to the Mayor of the City, at the Celebration of the Completion of the New York Canals, published in 1825, with early images of the City of Buffalo.

Several important programming languages and systems were developed on ITS, including MacLisp ( the precursor of Zetalisp and Common Lisp ), Microplanner ( implemented in MacLisp ), MDL ( which became the basis of Infocom's programming environment ), and Scheme.

Several species of marine mammals can be seen in the park ’ s area: Ringed Seals ( Phoca hispida ) and Bearded Seals ( Erignathus barbatus ) live here in large numbers, and from time to time a walrus ( Odobenus rosmarus ), a Common Seal ( Harbour Seal, Phoca vitulina ), a beluga ( Delphinapterus leucas ) or a narwhal ( Monodon monoceros ) may appear in Wager Bay.

* Several of the tapestries can be seen hanging on the walls of the Gryffindor Common Room in the Harry Potter films.

Several such tailorings are collected in Common Locale Data Repository.

Several species of dolphins or small whales also occur constantly around the peninsula: Dusky Dolphin, Bottlenose Dolphin, Common Dolphin, and endangered Hector's Dolphin.

Several species of Cetaceans are commonly found including Common Porpoise, White-beaked Dolphin, killer whale and Minke Whale.

Several months later the band made an appearance on an early form of internet television station ' MP3TV ' which led them to finally releasing their first official single, " Good Luck Olivia ", under the station's show host Susan Hyatt's Not Your Common Records.

Several contemporary liturgical texts, including the American 1979 Book of Common Prayer, the Anglican Church of Canada's Book of Alternative Services, and the Church of England's Common Worship, provide modern forms of the service.

Several centuries into the Common Era, a Taelon scientist named Ma ' el visited Earth.

Several of the more R & B-influenced modern-day rappers and their newest videos can also be regularly seen in heavy rotation on VH1 Soul ; for example: The Roots, De La Soul, Kanye West, Common, and Talib Kweli.

Several species of wintering waterfowl have been noted including Bar-headed Goose, Ruddy Shelduck, Eurasian Wigeon, Gadwall, Common Teal, Northern Pintail, Garganey, Northern Shoveler, Common Pochard, Brown-headed Gull, Black-headed Gull, Whiskered Tern, Gull-billed Tern and Caspian Tern.

Several other books, although not part of the principal series, are part of the Common Worship series.

Janson, “ A Common Network Flow Formulation to Several Civil Engineering Problems ” Civil Engineering Systems 1 ( 4 ), pp. 195 – 203, 1984