TY - JOUR AU - E. P. Golubeva TI - On the period length of the continued fraction expansion of quadratic irrationalities and class numbers of real quadratic fields.~II JO - Zapiski Nauchnykh Seminarov POMI PY - 1988 SP - 11 EP - 22 VL - 168 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1988_168_a1/ LA - ru ID - ZNSL_1988_168_a1 ER -