TY - JOUR AU - Babuška, Ivo TI - Über universal optimale Quadraturformeln JO - Applications of Mathematics PY - 1968 SP - 304 EP - 338 VL - 13 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/AM.1968.103177/ DO - 10.21136/AM.1968.103177 LA - ge ID - 10_21136_AM_1968_103177 ER -