@article{700352,
     title = {Solvability of some higher order two-point boundary value problems},
     booktitle = {Equadiff 10},
     series = {GDML\_Books},
     publisher = {Masaryk University},
     address = {Brno},
     year = {2002},
     pages = {183-189},
     url = {http://dml.mathdoc.fr/item/700352}
}

Grossinho, Maria do Rosário; Minhós, Feliz Manuel. Solvability of some higher order two-point boundary value problems, dans Equadiff 10, GDML_Books,  (2002), pp. 183-189. http://gdmltest.u-ga.fr/item/700352/