@article{MZ_1978__161_172705,
     author = {Juan Jos\'e Martinez},
     title = {Cohomological {Triviality.}},
     journal = {Mathematische Zeitschrift},
     pages = {263--264},
     publisher = {mathdoc},
     volume = {161},
     year = {1978},
     zbl = {0365.18024},
     url = {http://geodesic.mathdoc.fr/item/MZ_1978__161_172705/}
}