Karnaukhov V M

Publications in Math-Net.Ru

1. Sufficient conditions for Gevrey hypoellipticity of a class of second- order differential operators
   
   Vestnik Moskov. Univ. Ser. 1. Mat. Mekh., 1986, no. 1,  68–70
2. On local hypoellipticity of second-order operators with degenerate Levi matrix
   
   Uspekhi Mat. Nauk, 40:6(246) (1985),  141–142