@article{MASLO_2007_57_2_a4,
     author = {Somora, Peter},
     title = {The lower bound of number of solutions for the second order nonlinear boundary value problem via the root functions method},
     journal = {Mathematica slovaca},
     pages = {141--156},
     year = {2007},
     volume = {57},
     number = {2},
     mrnumber = {2357813},
     zbl = {1150.34004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_2007_57_2_a4/}
}