(NiNWARIANTY DIFFERENCIALXNYH KWADRATI^NYH FORM (B=s Invariants of Quadratic Differential Forms - (NwEBLEN(B, (No(B.s; (NlOP[ICA(B, (Na(B.(Nm(B.s; (NlOP[ICA(B, (Na(B.(Nm(B.s ((NmOSKWA (B:s (NiNOSTRANNOJ LITERATURY(B,s, 1948)
Keywords: (NmATEMATIKAs