Fully gapped superconductivity in single crystals of noncentrosymmetric Re_6Zr with broken time-reversal symmetry - G. M. Pang, Z. Y. Nie, A. Wang, D. Singh, W. Xie, W. B. Jiang, Y. Chen, R. P. Singh, M. Smidman,; H. Q. Yuan (American Physical Society (APS), 2018)
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