Cosmology Project (SCP). Proceedings of the 8th UCLA Dark Matter Symposium (Marina del Rey, California). Bibcode:2009AIPC.1166...53G. arXiv:0907.3526 . doi:10
Russian Traditions: A Biography of the Works through Mavra. 2 volumes. Berkeley: University of California Press. 1996. ISBN 978-0-520-07099-8. ——. Defining