Periodic solutions of the equation $\ddot x+g(x)=E\,{\rm cos}\,t+\sigma h(t)\dot x$
نویسندگان
چکیده
منابع مشابه
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ژورنال
عنوان ژورنال: Quarterly of Applied Mathematics
سال: 1987
ISSN: 0033-569X,1552-4485
DOI: 10.1090/qam/910451