Altshuller G. (1996), And suddenly the inventor appeared: TRIZ, the theory of inventive problem
solving (TIPS); 2nd ed., Technical Innovation Center, Inc.
 Chowdhury S. (2002), Design for six sigma: The revolutionary process for achieving extraordinary
profits; 1st ed., Dearborn Trade, Kaplan Professional Company.
 Howard R. A. (1980), An assessment of decision analysis; Operations Research 28(1); 4-27.
 Kepner-Tregoe Inc. (1977), Problem solving, decision making, and planning. Training Manual,
Transportation Hardware, Inc. (THINC), Toledo, Ohio.
 Pugh S. (1991), Total design: Integrated methods for successful product engineering, Addison-
Wesley Publishing Company Inc.; Reading, MA.
 Simon H. (1977), The new science of management decisions. Revised edition, Prentice-Hall;
Englewood Cliffs, NJ.
 Turban E. (1990). Decision support and expert systems: Management support systems. Second
edition, Macmillan Publishing Co.; New York, NY.