@article{RCM_1969__3_181575,
     author = {Jaime Lesmes},
     title = {Sobre una clase de operadores de convolucion, {II}},
     journal = {Revista colombiana de matematicas},
     pages = {83--90},
     publisher = {mathdoc},
     volume = {3},
     year = {1969},
     url = {http://geodesic.mathdoc.fr/item/RCM_1969__3_181575/}
}