HDL-ABEL Primer - Overview of ABEL Hardware Description Language. www.ee.upenn.edu/rca/software/abel/abel.primer.html
The Abel Hardware Description Language - An overview of the language from a university course's lecture notes. mazsola.iit.uni-miskolc.hu/cae/docs/xabel.html
Transitioning from ABEL-HDL to VHDL - An article from ISD Magazone on the need to move to a new language to support increasing device capacity. www.eedesign.com/ic-logic/abel/abel.html
