* Arthur T. Benjamin, Gregory O. Preston, Jennifer J. Quinn, A Stirling Encounter with Harmonic Numbers, ( 2002 ) Mathematics Magazine, 75 ( 2 ) pp 95 – 103.
* Arthur T. Benjamin, Gregory O. Preston, Jennifer J. Quinn, A Stirling Encounter with Harmonic Numbers, ( 2002 ) Mathematics Magazine, 75 ( 2 ) pp 95 – 103.
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