@article{HHA_2021_23_2_a3,
     author = {Roberto Frigerio and Andrea Maffei},
     title = {A remark on the double complex of a covering for singular cohomology},
     journal = {Homology, homotopy, and applications},
     pages = {59--68},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {2021},
     doi = {10.4310/HHA.2021.v23.n2.a4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4310/HHA.2021.v23.n2.a4/}
}