Studying the Nedap/Groenendaal ES3B Voting Computer: A Computer Security Perspective. - Rop Gonggrijp; Willem-Jan Hengeveld (EVT, 2007)

RIES - Rijnland Internet Election System: A Cursory Study of Published Source Code. - Rop Gonggrijp; Willem-Jan Hengeveld; Eelco Hotting; Sebastian Schmidt; Frederik Weidemann (VoteID, 2009)

Security analysis of India's electronic voting machines. - Scott Wolchok; Eric Wustrow; J. Alex Halderman; Hari K. Prasad; Arun Kankipati; Sai Krishna Sakhamuri; Vasavya Yagati; Rop Gonggrijp (CCS, 2010)