@article{RSMUP_1995__93__1_0,
     author = {Herzog, Marcel and Menegazzo, Federico},
     title = {On deficient products in infinite groups},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {1--6},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {93},
     year = {1995},
     mrnumber = {1354347},
     zbl = {0839.20042},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1995__93__1_0/}
}