Equazioni differenziali astratte

T. Kato: Semi-groups and temporally inhomogeneous evolution equations.- J. L. Lions: Equations différentielles opérationnelles dans les espaces de Hilbert.- L. Nirenberg: Equazioni differenziali ordinarie negli spazi di Banach.- R. S. Phillips: Semi-groups of contraction operators.- L. Amerio: Almost-periodic equations in Hilbert spaces.- G. C. Rota: A limit theorem for the time-dependent evolution equation.- S. Zaidman: Existence and almost periodicity for some differential euqations in Hilbert spaces.