@article{SF_1991__43_3_135102,
     author = {L. Marki},
     title = {Otto' {Steinfeld} 1924-1990 .},
     journal = {Semigroup forum},
     pages = {127--134},
     publisher = {mathdoc},
     volume = {43},
     number = {3},
     year = {1991},
     zbl = {0724.01025},
     url = {http://geodesic.mathdoc.fr/item/SF_1991__43_3_135102/}
}