TY  - JOUR
AU  - R. B. Stekol'shchik
TI  - Perfect elements in the modular structure associated with the extended Dynkin diagram $\widetilde{e}_6$
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1989
SP  - 90
EP  - 92
VL  - 23
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1989_23_3_a22/
LA  - ru
ID  - FAA_1989_23_3_a22
ER  -