@article{2833, author = {Zaman, F.D.}, title = {Perturbation of a biharmonic eigenvalue problem}, journal = {Portugaliae mathematica}, volume = {36}, year = {1977}, pages = {271-278}, zbl = {0457.31004}, mrnumber = {0597849}, language = {en}, url = {http://dml.mathdoc.fr/item/2833} }
Zaman, F.D. Perturbation of a biharmonic eigenvalue problem. Portugaliae mathematica, Tome 36 (1977) pp. 271-278. http://gdmltest.u-ga.fr/item/2833/