@article{10_21136_CMJ_1988_102230,
     author = {Kratz, Werner},
     title = {Asymptotic behaviour of {Riccati's} differential equation associated with self-adjoint scalar equations of even order},
     journal = {Czechoslovak Mathematical Journal},
     pages = {351--365},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {1988},
     doi = {10.21136/CMJ.1988.102230},
     mrnumber = {946304},
     zbl = {0659.34065},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1988.102230/}
}