Trunov G A

Publications in Math-Net.Ru

1. An estimate for a spectral relation for incomplete factorization of the form $S^*S$ of the difference approximation of the Laplace operator in the case of a quasiregular operator $S$
   
   Mat. Zametki, 47:2 (1990),  155–156
2. Convergence rate of the methods of approximate factorization
   
   Mat. Zametki, 46:5 (1989),  29–39