@article{10_14708_cm_v48i2_5272,
     author = {A.M.A El-Sayed and H.H.G Hashem},
     title = {Integrable solutions for quadratic {Hammerstein} and quadratic {Urysohn} functional integral equations},
     journal = {Commentationes Mathematicae},
     pages = { 199--207},
     publisher = {mathdoc},
     volume = {48},
     number = {2},
     year = {2008},
     doi = {10.14708/cm.v48i2.5272},
     language = {pl},
     url = {http://geodesic.mathdoc.fr/articles/10.14708/cm.v48i2.5272/}
}