@article{CM_1939__6__368_0,
     author = {Makai, E.},
     title = {\"Uber eine {Eigenwertabsch\"atzung} bei gewissen homogenen linearen {Differentialgleichungen} zweiter {Ordnung}},
     journal = {Compositio Mathematica},
     pages = {368--374},
     publisher = {Johnson Reprint Corporation},
     volume = {6},
     year = {1939},
     zbl = {0021.12601},
     language = {de},
     url = {http://www.numdam.org/item/CM_1939__6__368_0/}
}