1 (115) | Oak Ridge National Laboratory | USA | ||
2 (171) | Argonne National Laboratory | USA | ||
3 (194) | Sandia National Laboratories, New Mexico | USA | ||
4 (211) | National Renewable Energy Laboratory | USA | ||
5 (313) | U.S. Army * | USA | ||
6 (397) | National Research Council Canada * | CAN | ||