@article{SF_1994__49_2_135329,
     author = {L. Satko and O. Grosek and Boris Schein},
     title = {Eightieth birthday of {Professor} {Stefan} {Schwarz.}},
     journal = {Semigroup forum},
     pages = {1--6},
     publisher = {mathdoc},
     volume = {49},
     number = {2},
     year = {1994},
     zbl = {0796.01028},
     url = {http://geodesic.mathdoc.fr/item/SF_1994__49_2_135329/}
}