@article{AM2_1976__14_136599,
     author = {H.L. Vasudeva and A.B. Buche},
     title = {The generalized {Cauchy} equation for operator-valued functions.},
     journal = {Aequationes mathematicae},
     pages = {387--390},
     publisher = {mathdoc},
     volume = {14},
     year = {1976},
     zbl = {0326.47045},
     url = {http://geodesic.mathdoc.fr/item/AM2_1976__14_136599/}
}