@article{SMJ2_2006_32_1_a2,
     author = {Bouali, Said and Bouhafsi, Youssef},
     title = {On the {Range} and the {Kernel} of {Derivations}},
     journal = {Serdica Mathematical Journal},
     pages = {31--38},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2006_32_1_a2/}
}