TY  - RPRT
TI  - Robertson, Heine, and Payne reply.
AU  - IJ Robertson
AU  - V Heine
AU  - MC Payne
PY  - 1994
DO  - 10.1103/physrevlett.72.2303
UR  - https://pubmed.ncbi.nlm.nih.gov/10055841/
ID  - 10055841
ER  -