TY - RPRT TI - Comparison of artificial maturation of lignite in hydrous and nonhydrous conditions AU - F. Behar AU - M. D. Lewan AU - F. Lorant AU - M. Vandenbroucke PY - 2003 DO - 10.1016/s0146-6380(02)00241-3 UR - https://pubs.usgs.gov/publication/70026194 ID - 70026194 ER -