@article{PORMA_1977__36_2_115306,
     author = {Najar, Rudolph M.},
     title = {Spectral sequences and relative cohomology},
     journal = {Portugaliae mathematica},
     pages = {83--95},
     publisher = {mathdoc},
     volume = {36},
     number = {2},
     year = {1977},
     mrnumber = {0577414},
     zbl = {0453.18010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1977__36_2_115306/}
}