Probability theory and mathematical statistics. Textbook for High Schools (Vol 3) / Teoriya veroyatnostey i matematicheskaya statistika Uchebnik dlya studentov vuzov, obuchayushchikhsya po ekonomicheskim spetsialnostyam - 3-e izd.,pererab. i dop. - ("Zolotoy fond rossiyskikh uchebnikov") (GRIF)