Gasanov A.I.,  Gokhman B.M.,  Efimochkin A. P. i dr. Rozhdenie izobreteniya. Strategiya i taktika resheniya izobretatelskikh zadach./Hasanov A.I.,  Gokhman B.M.,  Efimochkin A. P. et al. Birth of an invention. Strategy and tactics of solving inventive problems. In Russian - landofmagazines.com

TransliterationGasanov A.I., Gokhman B.M., Efimochkin A. P. i dr. Rozhdenie izobreteniya. Strategiya i taktika resheniya izobretatelskikh zadach.

In EnglishHasanov A.I., Gokhman B.M., Efimochkin A. P. et al. Birth of an invention. Strategy and tactics of solving inventive problems. In Russian

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