@article{CLTM_1981_1981_1_a10,
     author = {Tita, Nicolae},
     title = {Sobre una clase de operadores lineales.},
     journal = {Collectanea mathematica},
     pages = {275-279},
     publisher = {mathdoc},
     volume = {32},
     number = {3},
     year = {1981},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1981_1981_1_a10/}
}