International Summer Institute on Cosmological Models (1963 : Lisbon, Portugal) Cosmological models; proceedings, edited by Centro de Cl̀culo Cientf̕ico, Instituto Gulbenkian de Cin̊cia.

International Summer Institute on Cosmological Models (1963 : Lisbon, Portugal)

Cosmological models; proceedings, edited by Centro de Cl̀culo Cientf̕ico, Instituto Gulbenkian de Cin̊cia.

Cosmology -- Congresses.

NATO Science Committee.

Instituto Gulbenkian de Cin̊cia. Centro de Cl̀culo Cientf̕ico.