The 2 references without contexts in paper Боцян (2017) “Оценка эффективности КСО с использованием теории игр // CSR effectivity evaluation with usage of game theory” / spz:ztu:ven:112266

7
Pushkar, M.S. (2011) Teorija piznannja u rozvytku nauky pro kontrol, Kart-blansh, 140 p.
(check this in PDF content)
8
Aumann, R.J. (1989) Lectures on game theory, Westview Press, San Francisco, 120 p.
(check this in PDF content)