@article{RSMUP_1979__61__13_0,
     author = {Bartolone, Claudio and Bartolozzi, Federico},
     title = {Sopra una classe di piani $(R, r)$-transitivi},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {13--31},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {61},
     year = {1979},
     mrnumber = {569648},
     zbl = {0445.51007},
     language = {it},
     url = {http://www.numdam.org/item/RSMUP_1979__61__13_0/}
}