@article{ZAA_2000__19_2_55311,
     author = {Wong, P. J. Y. and Agarwal, R. P.},
     title = {Multiple solutions for a system of  boundary value problems.},
     journal = {Zeitschrift f\"ur Analysis und ihre Anwendungen},
     pages = {511--528},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2000},
     zbl = {1160.34313},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZAA_2000__19_2_55311/}
}