Generic properties of closed geodesics on smooth hypersurfaces. Floris Takens; Luchezar Stojanov — 1993 Mathematische Annalen
Spectrum of the Poincaré Map for Periodic Reflecting Rays in Generic Domains. Luchezar Stojanov; Vesselin Petkov — 1987 Mathematische Zeitschrift
A bumpy metric theorem and the Poisson relation for generic strictly convex domains. Luchezar N. Stojanov — 1990 Mathematische Annalen
Generic properties of periodic reflecting rays and the Poisson relation Luchezar N. Stojanov — 1989 Banach Center Publications