| Methodology of metal criticality determination TE Graedel, R Barr, C Chandler, T Chase, J Choi, L Christoffersen, ... Environmental science & technology 46 (2), 1063-1070, 2012 | 666 | 2012 |
| Criticality of the geological copper family NT Nassar, R Barr, M Browning, Z Diao, E Friedlander, EM Harper, ... Environmental science & technology 46 (2), 1071-1078, 2012 | 187 | 2012 |
