1. J. D. Dixon, M. P. F. du Sautoy, A. Mann, and D. Segal, Analytic pro-p groups, second edition, Cambridge Stud. Adv. Math., 61, Cambridge University Press, Cambridge, 1999.
2. V. V. Deodhar, On central extensions of rational points of algebraic groups, Amer. J. Math. 100 (1978), no. 2, 303–386.
3. M. Horn and S. Zandi, Second cohomology of Lie rings and the Schur multiplier, Int. J. Group Theory 3 (2014), no. 2, 9–20.
4. K. Iwasawa, Local class field theory, Oxford Science Publications. Oxford Mathematical Monographs, pp. viii+155, The Clarendon Press, Oxford University Press, New York, 1986.
5. B. Klopsch, On the Lie theory of p-adic analytic groups, Math. Z. 249 (2005), no. 4, 713–730.