Period annuli and multiple solutions for two-point BVD

[1] ATSLEGA, S.: On solutions of the Li´enard type equations, in: Proc. Mathematics. Differential Equations, Vol. 7, Univ. of Latvia, Institute of Math. and Comp. Sci., 2007, pp. 53-60, http://www.lumii.lv/Pages/LUMII-2007/Sbornik-2007-english.htm.Search in Google Scholar

[2] ATSLEGA, S.-SADYRBAEV, F.: Period annuli in the Li´enard type equation, Int. J. Pure Appl. Math. 44 (2008), 117-123.Search in Google Scholar

[3] SABATINI, M.: Li´enard limit cycles enclosing period annuli, or enclosed by period annuli, Rocky Mountain J. Math. 35 (2005), 253-266.10.1216/rmjm/1181069780Search in Google Scholar

[4] SABATINI, M.: On the period function of x"+f(x)x'² + g(x) = 0, J. Differential Equations 196 (2004), 151-168.10.1016/S0022-0396(03)00067-6Search in Google Scholar