TY - RPRT TI - Negative magnetoresistance in variable-range-hopping conduction. AU - HL Zhao AU - BZ Spivak AU - MP Gelfand AU - S Feng PY - 1991 DO - 10.1103/physrevb.44.10760 UR - https://pubmed.ncbi.nlm.nih.gov/9999103/ ID - 9999103 ER -