On the probability of the collision of a Mars-sized planet with the Earth to form the Moon

Rudolf Dvorak, Birgit Loibnegger, Thomas I. Maindl submitted to MNRAS PDF (full text) abstract

Dating the Moon-forming impact event with asteroidal meteorites

W. F. Bottke, D. Vokrouhlický, S. Marchi, T. Swindle, E. R. D. Scott, J. R. Weirich, and H. Levison Science 17 April 2015: Vol. 348 no. 6232 pp. 321-323 DOI: 10.1126/science.aaa0602 LINK Supplementary materials (PDF)