Calzetta, E., & Castagnino, M. Riemannian approach and cosmological singularity.
Cita Chicago Style (17a ed.)Calzetta, E., y M. Castagnino. Riemannian Approach and Cosmological Singularity.
Cita MLA (8a ed.)Calzetta, E., y M. Castagnino. Riemannian Approach and Cosmological Singularity.
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