@article{BASS_2003_28_1_a6,
     author = {M. Kosti\'c},
     title = {Convoluted {C-cosine} functions and convoluted {C-semigroups}},
     journal = {Bulletin de l'Acad\'emie serbe des sciences. Classe des sciences math\'ematiques et naturelles},
     pages = {75 - 92},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {2003},
     zbl = {1067.47056},
     url = {http://geodesic.mathdoc.fr/item/BASS_2003_28_1_a6/}
}