@article{10_4153_CMB_1990_063_0,
     author = {Yang, Yisong},
     title = {A {Comparison} of {Eigenvalues} of {Two} {Sturm-Liouville} {Problems}},
     journal = {Canadian mathematical bulletin},
     pages = {386--390},
     year = {1990},
     volume = {33},
     number = {4},
     doi = {10.4153/CMB-1990-063-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1990-063-0/}
}