HYDROGEN PENTAGRAPHENELIKE STRUCTURE STABILIZED BY HAFNIUM: A HIGH-TEMPERATURE CONVENTIONAL SUPERCONDUCTOR Статья Xie H., Duan D., Song H., Zhang Z., Jiang S., Cui T., Yao Y., Feng X., Redfern S.A.T., Pickard C.J., Kresin V.Z. Physical Review Letters. Том 125. 2020. 217001 с.