Normal subgroups and projectivities of finite groups
Rendiconti del Seminario Matematico della Università di Padova, Tome 59 (1978), pp. 11-15. 
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     author = {Menegazzo, Federico},
     title = {Normal subgroups and projectivities of finite groups},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {11--15},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {59},
     year = {1978},
     mrnumber = {547074},
     zbl = {0581.20018},
     language = {en},
     url = {http://www.numdam.org/item/RSMUP_1978__59__11_0/}
}
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Menegazzo, Federico. Normal subgroups and projectivities of finite groups. Rendiconti del Seminario Matematico della Università di Padova, Tome 59 (1978), pp. 11-15. http://www.numdam.org/item/RSMUP_1978__59__11_0/

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