%0 Journal Article %T Lavrentiev-Bitsadze equation with multiple characteristics %A Akimov, A.A. %A Vahitov, A.R. %K Lavrent’ev-Bitsadze model equation, singular equations, boundary value problems, Lyapunov class %J International Journal of Applied Sciences and Technology Integral %D 2018 %N %P 0 %I Electronic science