@article{10_21136_MB_2011_141697,
     author = {Karulina, Elena},
     title = {Some estimates for the minimal eigenvalue of the {Sturm-Liouville} problem with third-type boundary conditions},
     journal = {Mathematica Bohemica},
     pages = {377--384},
     publisher = {mathdoc},
     volume = {136},
     number = {4},
     year = {2011},
     doi = {10.21136/MB.2011.141697},
     mrnumber = {2985547},
     zbl = {1249.34093},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2011.141697/}
}