@article{CMJ_2010__60_1_a14, author = {Graef, John R. and Kong, Lingju and Yang, Bo}, title = {Positive solutions for third order multi-point singular boundary value problems}, journal = {Czechoslovak Mathematical Journal}, pages = {173--182}, publisher = {mathdoc}, volume = {60}, number = {1}, year = {2010}, mrnumber = {2595081}, zbl = {1224.34060}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMJ_2010__60_1_a14/} }