[AhoSethiUllman96] Copyright © 1996 Bell Telephone Laboratories, Inc.. James T. DeWolf. 0-201-10088-6. Addison-Wesley Publishing Company. Compilers, Principles, Techniques, and Tools.
[Kites75] Copyright © 1974, 1975 Product Development International Holding N. V.. 0-88459-021-6. Plenary Publications International, Inc.. Kites. Ancient Craft to Modern Sport. 988-999.