TY  - JOUR
AU  - B. V. Levin
TI  - On the least almost prime number in an arithmetic progression and the sequence $k^2x^2+1$
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1965
VL  - 20
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1965_20_4_a11/
LA  - ru
ID  - RM_1965_20_4_a11
ER  -