@article{EXMATH_2006_2006_1_a4,
     author = {Akkouchi, Mohamed and Bakali, Allal and Bouikhalene, Belaid and El Qorachi, El Houcien},
     title = {Sobre la ecuaci\'on funcional de {d'Alembert} generalizada.},
     journal = {Extracta mathematicae},
     pages = {67-82},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_2006_2006_1_a4/}
}