@article{CLTM_1994_1994_1_a14,
     author = {Boyadzhiev, Khristo N.},
     title = {Logaritmos y potencias imaginarias de operadores sobre espacios de {Hilbert.}},
     journal = {Collectanea mathematica},
     pages = {287-300},
     publisher = {mathdoc},
     volume = {45},
     number = {3},
     year = {1994},
     zbl = {0819.47018},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1994_1994_1_a14/}
}