TY  - JOUR
AU  - S. S. Ryshkov
TI  - On perfect form $A_n^k$: existence of lattices with non-fundamental simplex of division; existence of perfect forms, which are not reducible in the sense of Minkowski to a form with coefficients
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1973
SP  - 65
EP  - 71
VL  - 33
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1973_33_a3/
LA  - ru
ID  - ZNSL_1973_33_a3
ER  -