@article{10_21136_CMJ_1989_102346,
     author = {Rach\r{u}nkov\'a, Irena},
     title = {Existence and uniqueness of solutions of four-point boundary value problems for 2nd order differential equations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {692--700},
     publisher = {mathdoc},
     volume = {39},
     number = {4},
     year = {1989},
     doi = {10.21136/CMJ.1989.102346},
     mrnumber = {1018005},
     zbl = {0695.34016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1989.102346/}
}