Zhmud É. M.
Ukr. Mat. Zh. - 1995. - 47, № 8. - pp. 1144–1148
We give a description of finite groups all irreducible characters of which take at most two nonzero values.
Ukr. Mat. Zh. - 1995. - 47, № 4. - pp. 546–550
This paper is a sequel of . On the basis of the results obtained therein, we establish inequalities that strengthen the known Green inequality for the order of the Schur multiplier of ap-group.