2012 · L. Berezhiani, G. Chkareuli, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 181
2013 · Lasha Berezhiani, Giga Chkareuli, et al. · Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields · 47