On exponential dichotomy of semigroups. Sasu, B. — 2006 Acta Mathematica Universitatis Comenianae. New Series
On uniform exponential stability of periodic evolution operators in Banach spaces. Megan, M.; Sasu, L.; Sasu, B. — 2000 Acta Mathematica Universitatis Comenianae. New Series
Perron conditions and uniform exponential stability of linear skew-product semiflows on locally compact spaces. Megan, M.; Sasu, A.L.; Sasu, B. — 2001 Acta Mathematica Universitatis Comenianae. New Series