TDC
= Trend Dynamics Course 1994-95
TDA = Trend Dynamics Applied 1996-97
TDL = Trend Dynamics Labs 1998-2002
1st
Number = Volume
2nd Number = Issue; then page numbers follow
Example:
TDA 2: 3: 219-232 = TD Applied Vol. 2 (1997); Issue 3 (March 1997);
pages 219-232