@article{10_1017_S0017089511000590,
     author = {WEBB, J. R. L. and ZIMA, M.},
     title = {MULTIPLE {POSITIVE} {SOLUTIONS} {OF} {RESONANT} {AND} {NON-RESONANT} {NON-LOCAL} {FOURTH-ORDER} {BOUNDARY} {VALUE} {PROBLEMS}},
     journal = {Glasgow mathematical journal},
     pages = {225--240},
     year = {2012},
     volume = {54},
     number = {1},
     doi = {10.1017/S0017089511000590},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089511000590/}
}