E. A. Potseluevskaya, “Approximation of Boolean functions to Schaefer's classes”, Fundam. Prikl. Mat., 16:7 (2010), 197–204; J. Math. Sci., 183:3 (2012), 407–412
2009
2.
E. A. Potseluevskaya, “Public-key cryptographic system based on generalized satisfiability problem”, Fundam. Prikl. Mat., 15:5 (2009), 199–208; J. Math. Sci., 172:5 (2011), 751–758