Библиография

2009
Braynov P, Christov O..  2009.  Non-integrability of a Hamiltonian system, based on a problem of nonlinear vibration of an elastic string. Annuaire de l’Université de Sofia “St. Kliment Ohridski”. Faculté de Mathématiques et Informatique. 99PDF icon 99-137-153.pdf (1.29 MB)