Tret'yakov V P

Publications in Math-Net.Ru

1. On the question of the formal multiplication of series
   
   Uchenye Zapiski Kazanskogo Universiteta, 129:3 (1969),  152–161
2. Multiplication of double series in the case when the partial sums of one of the series are unbounded
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1964, no. 1,  122–124
3. On the theory of formal multiplication of double series
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1961, no. 5,  78–85