@article{RSMUP_2020__144__27_0, author = {Silvana Bazzoni and Giovanna Le Gros}, title = { $\mathcal P_1$-covers over commutative rings}, journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova}, pages = {27--43}, volume = {144}, year = {2020}, doi = {10.4171/rsmup/54}, mrnumber = {4186444}, language = {en}, url = {http://www.numdam.org/articles/10.4171/rsmup/54/} }