@article{EJDE_2005__2005__a221,
     author = {Mavridis, Kyriakos G. and Tsamatos, Panagiotis Ch.},
     title = {Two positive solutions for second-order functional and ordinary boundary-value problems},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2005},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a221/}
}