@article{CLTM_1990_1990_1_a13,
     author = {Saleh, M. H. and Amer, S. M.},
     title = {Soluci\'on aproximada de ecuaciones integro-diferenciales singulares no lineales.},
     journal = {Collectanea mathematica},
     pages = {175-188},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1990_1990_1_a13/}
}