%0 Journal Article
%A N. V. Ivanov
%T Subgroups of Teichm\"uller modular groups and their Frattini subgroups
%J Funkcionalʹnyj analiz i ego priloženiâ
%D 1987
%P 76-77
%V 21
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/FAA_1987_21_2_a11/
%G ru
%F FAA_1987_21_2_a11