@article{RSMUP_2011__126__63_0,
     author = {Dujella, Andrej and Pejkovi\'c, Tomislav},
     title = {Root separation for reducible monic quartics},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {63--72},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {126},
     year = {2011},
     mrnumber = {2918199},
     zbl = {1258.11052},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_2011__126__63_0/}
}