@electronic{infocenter.sybase.com,
   title       = {SyBooks Online}, 
   url         = {http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.help.ase_15.0.blocks/html/blocks/blocks101.htm},
   biburl      = {https://puma.uni-kassel.de/url/7730f0fc6fd5f9e56a99f01968858ede/stefani},
   keywords    = {database datenbank function functions funktion funktionen pica string sybase},
   added-at    = {2012-03-21T09:56:47.000+0100},
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