TY - RPRT TI - Approximate expression for interaction of a two-parallel-plane double layer at constant surface potential and constant surface charge. AU - Shi-Min Zhang PY - 2003 DO - 10.1016/s0021-9797(03)00684-2 UR - https://pubmed.ncbi.nlm.nih.gov/14611784/ ID - 14611784 ER -