@article{RLIN_1993_9_4_1_a3,
     author = {Alekseevsky, Dmitri V. and Marchiafava, Stefano},
     title = {Quaternionic-like structures on a manifold: {Note} {I.} 1-integrability and integrability conditions},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {43--52},
     publisher = {mathdoc},
     volume = {Ser. 9, 4},
     number = {1},
     year = {1993},
     zbl = {0781.53023},
     mrnumber = {976996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_1993_9_4_1_a3/}
}