@article{RSMUP_1981__65__293_0,
     author = {Letizia, Maurizio},
     title = {Motivi associati a successioni di coomologia relativa},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {293--299},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {65},
     year = {1981},
     mrnumber = {653302},
     zbl = {0524.14020},
     language = {it},
     url = {http://www.numdam.org/item/RSMUP_1981__65__293_0/}
}