Over the past few years, articles of the author were published in the following printed magazines:
June 2010 - De Javasche Bank note issues
Runner up for the Fred Philipson Award for the best article appearing in the IBNS journal in 2010
September 2009 - Secret codes on Indonesian Revolution Money
Runner up for the Fred Philipson Award for the best article appearing in the IBNS journal in 2009
March 2010 - Netherlands Indies 10 cent proof note
November 2009 - Netherlands Indies 10 cent proof note
February 2009 - The Soekarno Code: Secret codes in Revolution Money
September 2006 - Secret codes of Indonesian Revolution Money
June 2008 - Netherlands Indies 10 cent proof note