Below are the resources referred to or cited by the developer(s) of the original unit:
Ferrari, D (1990) 'Client requirements for real-time communication services', IEEE Communications Magazine, 28(11): 65–72.
Fluckiger, F (1995) Understanding Networked Multimedia: Applications and Technology, Prentice Hall.
Kozierok, C M (2005) The TCP/IPGuide, http://www.tcpipguide.com/free/index.ht
Liu, C L (1998) 'Multimedia over IP: RSVP, RTP, RTCP, RTSP', http://www.cs.wustl.edu/~jain/cis788-97/ftp/ip_multimedia.pdf.
Sun Microsystems (1999) JavaTM Media Framework API Guide, http://java.sun.com/products/java-media/jmf/2.1.1/guide/.