TY - JOUR AU - J. Sokół AU - W. Szumny TI - Linear problems in the space of polynomials of degree at most 3 JO - Problemy analiza PY - 1998 SP - 140 EP - 146 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PA_1998_5_a8/ LA - en ID - PA_1998_5_a8 ER -