Zayats, Vasyl     The building optimal combination numerical methods second order for analysis of nonlinear dynamical systems [Текст] / Vasyl Zayats // Perspective technologies and methods in MEMS design : proc. of IXth Intern. conf., 16-20 Apr. 2013, Polyana, Ukraine / Lviv Polytechn. Nat. Univ. — Lviv : Lviv Polytechnic Publ. House, 2013. — P. 127-129.