Yakovyna, Vitaly     Modified high-order software reliability gokhale model [Текст] / Vitaly Yakovyna, Oksana Nytrebych, Dmytro Fedasyuk // Computer science and information technologies CSIT 2012 : proc. of the VII Intern. sci. and techn. conf., Nov. 20-24, 2012, Lviv, Ukraine / Min. of Education, Science, Youth and Sports of Ukraine, Lviv Politechniс Nat. Univ. — Lviv : Publ. Lviv Politechniс, 2012. — P. 194-195.