@misc{CMUC_1988_29_4_a17,
     title = {Mathematical conferences 1989},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {775--776},
     year = {1988},
     volume = {29},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1988_29_4_a17/}
}