@article{CMJ_2000_50_3_a14,
     author = {Singh, Bhagat},
     title = {On nonoscillation of canonical or noncanonical disconjugate functional equations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {627--639},
     year = {2000},
     volume = {50},
     number = {3},
     mrnumber = {1777483},
     zbl = {1079.34545},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2000_50_3_a14/}
}