I did some research. The same magazine but in English is called Elector Electronics http://www.elektor-electronics.co.uk/ln/ln.htm
The article was published in April '99. (Issue No. 276)
(...) Electronics (...) Actually the magazine is originally in Dutch (Elektuur). It was mentioned a while ago in this newsgroup in a thread on a BasicStamp programming course. I believe the author (Dennis Clark) never got a decent copy! Regards, (...) (25 years ago, 18-Jun-00, to lugnet.robotics)