@article{AM2_1994__48_2-3_137590,
     author = {Nassar H.S. Haidar},
     title = {A double series variational method for a class of second kind {Fredholm} integral equations.},
     journal = {Aequationes mathematicae},
     pages = {24--34},
     publisher = {mathdoc},
     volume = {48},
     number = {2-3},
     year = {1994},
     zbl = {0807.65139},
     url = {http://geodesic.mathdoc.fr/item/AM2_1994__48_2-3_137590/}
}