Many periodic solutions for a second order cubic periodic differential equation
نویسندگان
چکیده
منابع مشابه
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ژورنال
عنوان ژورنال: Monatshefte für Mathematik
سال: 2020
ISSN: 0026-9255,1436-5081
DOI: 10.1007/s00605-020-01433-4