Математический анализ. Теория пределов и дифференциальное исчисление основные положения теории, методические указания и варианты расчетно-графических работ авт.-сост.: Н. Н. Короткова, Б. Л. Теуш, О. И. Ткаченко и др. ; , каф. «Высшая математика»
“ This being human is a guest house. Every morning is a new arrival. A joy, a depression, a meanness, some momentary awareness comes as an unexpected visitor...Welcome and entertain them all. Treat each guest honorably. The dark thought, the shame, the malice, meet them at the door laughing, and invite them in. Be grateful for whoever comes, because each has been sent as a guide from beyond. ” ― Rumi
