@article{EJDE_2008__2008__a7,
     author = {Kelevedjiev, Petio S. and Palamides, Panos K. and Popivanov, Nedyu},
     title = {Another understanding of fourth-order four-point boundary-value problems},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2008},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2008__2008__a7/}
}