Real and complex analysis. At 6 pm, Part 2. Integral calculus of functions of a scalar argument. Part 3. Differential calculus of functions of a vector argument Proc. allowance / Veshchestvennyy i komplexnyy analiz. V 6 ch. Ch. 2. Integralnoe ischislenie funktsiy skalyarnogo argumenta. Ch. 3. Differentsialnoe ischislenie funktsiy vektornogo argumenta Ucheb. posobie