@article{10_4064_ap100_1_1,
     author = {Qingliu Yao},
     title = {Positive solutions to a singular fourth-order
 two-point boundary value problem},
     journal = {Annales Polonici Mathematici},
     pages = {1--12},
     publisher = {mathdoc},
     volume = {100},
     number = {1},
     year = {2011},
     doi = {10.4064/ap100-1-1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap100-1-1/}
}