@article{BUMI_2003_8_6B_2_a6,
     author = {Valent, Tullio},
     title = {On the notion of potential for mappings between linear spaces. {A} generalized version of the {Poincar\'e} lemma},
     journal = {Bollettino della Unione matematica italiana},
     pages = {381--392},
     publisher = {mathdoc},
     volume = {Ser. 8, 6B},
     number = {2},
     year = {2003},
     zbl = {1150.58001},
     mrnumber = {442812},
     language = {it},
     url = {https://geodesic-test.mathdoc.fr/item/BUMI_2003_8_6B_2_a6/}
}