Математичний аналіз і диференціальні рівняння вивчаю САМ

Hello, dear friend! Feels good to be a part of this site. It is a little about myself: I am 42 years old. I live in Europe, I've married 4 years ago. I have two children - a son, and the daughter. I live in a town in south Europe. I'm working at the the office. I really hope Im useful at all My...