Indigenous nitrogen in the Moon: Constraints from coupled nitrogen–noble gas analyses of mare basalts
Evelyn Füri, Peter H. Barry, Lawrence A. Taylor, Bernard Marty Earth and Planetary Science Letters Volume 431, 1 December 2015, Pages 195–205 LINK
Vanadium isotopic difference between the silicate Earth and meteorites
Nielsen SG, Prytulak J, Wood BJ and Halliday AN (2014) Earth and Planetary Science Letters Volume 389, 1 March 2014, Pages 167–175 LINK