Summer School Nonlinear Oscillations in Mechanical Systems (27th 1999 Repino, Leningradskai͡a oblastʹ, Russia)

• Trudy XXVII Letneĭ shkoly Analiz i sintez nelineĭnykh mekhanicheskikh kolebatelʹnykh sistem, Sankt-Peterburg (Repino), 1-8 senti͡abri͡a 1999 goda, NOMS '99