Неевклидова геометрия : критико-историческое исслед. ее развития, доп. заметкой А.В.Васильева 'Об отношении Н.И.Лобачевского к теории параллельных линий до 1826 г.'
“ Knock, And He'll open the door. Vanish, And He'll make you shine like the sun. Fall, And He'll raise you to the heavens. Become nothing, And He'll turn you into everything. ” ― Rumi
