Donald J. Durham Jr. (1964). «An Analysis of Stock Market Indicators (недоступная ссылка)». Master’s thesis, Naval Postgraduate School. Monterey, California: Defense Technical Information Center: «The Trendex model first came to the attention of the author when it was described by E.S.C. Coppock in the 15 October 1962 issue of Barron’s.»
