@article{10_21136_AM_1968_103177,
     author = {Babu\v{s}ka, Ivo},
     title = {\"Uber universal optimale {Quadraturformeln}},
     journal = {Applications of Mathematics},
     pages = {304--338},
     publisher = {mathdoc},
     volume = {13},
     number = {4},
     year = {1968},
     doi = {10.21136/AM.1968.103177},
     mrnumber = {0244680},
     zbl = {0247.65010},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1968.103177/}
}