@article{AM2_1989__38_1_137325,
     author = {J. Vukman and M. Bresar},
     title = {On some additive mappings in rings with involution.},
     journal = {Aequationes mathematicae},
     pages = {178--185},
     publisher = {mathdoc},
     volume = {38},
     number = {1},
     year = {1989},
     zbl = {0691.16041},
     url = {http://geodesic.mathdoc.fr/item/AM2_1989__38_1_137325/}
}