Krents А. А. RussiaSamara Samara branch of Physical Institute. P. N. Lebedev Of The Russian Academy Of Sciences, 443011 Russia, Samara, ul Novo-Sadovaya 221 Engineerkrenz86@mail.ru Additional info Author's articles BIRTH OF A STABLE TORUS FROM THE CRITICAL CLOSED CURVE AND ITS BIFURCATIONS IN A LASER SYSTEM WITH FREQUENCY DETUNING