Title: Trudy XXVII Letneĭ shkoly Analiz i sintez nelineĭnykh mekhanicheskikh kolebatelʹnykh sistem, Sankt-Peterburg (Repino), 1-8 senti͡abri͡a 1999 goda, NOMS '99
Subjects: Nonlinear oscillators, Congresses, Nonlinear mechanics, Analytic Mechanics