134 citations · 257 across the 4 of their papers we have counts for
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A. Yamamoto, C. Takao, T. Masui +2
Superconductivity with Tc above 9 K was found in metal-deficient NbB2 prepared under 5 GPa, while no clear superconductivity was observed down to 3 K in stoichiometric NbB2. The su…