Parvatov Nikolay G. «Conditions for maximality of subclones» //  2011. №1(11) C.14-25
                                                    
                        Parvatov                 N. G.                 «COMPLETENESS PROBLEMS FOR DESCRETE FUNCTIONS            » //  2009. №2(4) C.56-78
                                                    
                        Parvatov                 N.G.                 «Same properties of Closure Operators in Complete Lattice            » //  2008. №3 (4) C.119-124
