@article{CMUC_2000__41_2_a12,
     author = {Pflugfelder, Hala Orlik},
     title = {Historical notes on loop theory},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {359--370},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {2000},
     mrnumber = {1780877},
     zbl = {1037.01010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2000__41_2_a12/}
}