Ralf Krause wrote a tutorial on using CyLab with REALbasic (5.5) (in German) (an older tutorial based on REALbasic 4.0 is available too)

Burkhard Kainka's website. Mr. Kainka wrote the firmware of the Modul-Bus and Elektor devices. He is the author of a book and two Elektor articles on this subject.

AK-Modul-Bus Computer GmbH, manufacturers of CompuLAB USB and USB-Port.

Elektor (nl de fr uk) magazine published USB projects in september/oktober 2000 ( nl de fr uk ) and december 2001-februari 2002 ( nl-1 nl-2 de-1 de-2 fr uk-1 uk-2 )