I wish I could help you out there - I, too, searched on line and thought it so odd, in this day and age, that I couldn't find it. And getting contact information for the magazine to track it down is a heroic effort that may or may not be fruitful. I'm curious to know why do you want the article? The information in the book is much more comprehensive and covers everything and more that was featured in the article.
I thought I remembered reading here that there was a testamonial by someone in the magazine using the diet. So I was mostly curious to read that.