@article{MZ_1973__130_171870,
     author = {Frederick V. Atkinson},
     title = {Nonlinear {Extensions} of {Limit-Point} {Criteria.}},
     journal = {Mathematische Zeitschrift},
     pages = {297--312},
     publisher = {mathdoc},
     volume = {130},
     year = {1973},
     zbl = {0273.34008},
     url = {http://geodesic.mathdoc.fr/item/MZ_1973__130_171870/}
}