1. On monotonie functions of the algebra of logic;Korobkov,1965
2. Some generalizations of the problem of “deciphering” monotonie functions of the algebra of logic;Korobkov,1965
3. Sur le nombre des fonctiones booléenes monotones de n variables;Hansel;C. r. Acad. Sci.,1966
4. On the number of monotonie Boolean functions of n variables;Hansel,1968