See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/241009484 A Method for Studying Oscillations of Nonlinear Differential Equations. Applications to Some Equations in Biology and Ec.... Article · January 2005 DOI: 10.1007/1-4020-2128-3_11 CITATION 1 READS 62 2 authors: Garen Barseghyan Life Sciences International Postgraduate Educational C… 6 PUBLICATIONS 1 CITATION SEE PROFILE Grigor Barsegian National Academy of Sciences of Armenia 55 PUBLICATIONS 207 CITATIONS SEE PROFILE All content following this page was uploaded by Garen Barseghyan on 20 January 2015. The user has requested enhancement of the downloaded file.