On a Class of Elliptic-Parabolic Equations on Unbounded Intervals

Approximation of semi-groups of operators

H. F. Trotter · Pacific Journal of Mathematics · 1958 · 457 citations · Full text

Natural Sciences, Computer Science, Representation Theory +5

On C0-semigroups generated by differential operators satisfying Ventcel's boundary conditions

Ph. Clément, C.A. Timmermans · Indagationes Mathematicae (Proceedings) · 1986 · 67 citations

Natural Sciences, Mathematics, Differential Equations +10

On Some Degenerate Differential Operators on Weighted Function Spaces

Francesco Altomare, Ingrid Carbone · Journal of Mathematical Analysis and Applications · 1997 · 24 citations

Natural Sciences, Mathematics, Differential Equations +12