@article{ARM_2000_36_4_a8,
     author = {Chantladze, T. and Lomtatidze, A. and Ugulava, D.},
     title = {Conjugacy and disconjugacy criteria for second order linear ordinary differential equations},
     journal = {Archivum mathematicum},
     pages = {313--323},
     year = {2000},
     volume = {36},
     number = {4},
     mrnumber = {1811176},
     zbl = {1054.34053},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2000_36_4_a8/}
}