@article{RSMUP_2015__133__117_0,
     author = {Hafezieh, Roghayeh and Spiga, Pablo},
     title = {Groups having complete bipartite divisor graphs for their conjugacy class sizes},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {117--124},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {133},
     year = {2015},
     mrnumber = {3354947},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_2015__133__117_0/}
}