HYDROGEN PENTAGRAPHENELIKE STRUCTURE STABILIZED BY HAFNIUM: A HIGH-TEMPERATURE CONVENTIONAL SUPERCONDUCTOR ArticleXie 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.