@article{10_21136_AM_1966_103027,
     author = {Babu\v{s}ka, Ivo},
     title = {\"Uber optimale {Quadraturformeln} im {Raume} periodischer {Funktionen}},
     journal = {Applications of Mathematics},
     pages = {259--265},
     publisher = {mathdoc},
     volume = {11},
     number = {4},
     year = {1966},
     doi = {10.21136/AM.1966.103027},
     mrnumber = {0208831},
     zbl = {0221.65038},
     language = {ge},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1966.103027/}
}