TY - JOUR AU - T. Hessami Pilehrood AU - Kh. Hessami Pilehrood TI - Rational Approximations to Values of the Digamma Function and a Conjecture on Denominators JO - Matematičeskie zametki PY - 2011 SP - 744 EP - 763 VL - 90 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2011_90_5_a9/ LA - ru ID - MZM_2011_90_5_a9 ER -