%0 Journal Article %A Valent, Tullio %T On the notion of potential for mappings between linear spaces. A generalized version of the Poincaré lemma %J Bollettino della Unione matematica italiana %D 2003 %P 381-392 %V 6B %N 2 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/BUMI_2003_8_6B_2_a6/ %G it %F BUMI_2003_8_6B_2_a6