Luigi Alcuri Giuseppe Barbera Giuseppe D'Acquisto Service Curve Estimation by Measurement: An Input Output Analysis of a Softswitch Model. 49-60 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3375&spage=49 2005 conf/qosip/2005 QoS-IP db/conf/qosip/qosip2005.html#AlcuriBD05