TY - RPRT TI - Geometry-controlled conserving approximations for the t-J model. AU - MD Johnson AU - C Gros AU - von Szczepanski KJ PY - 1991 DO - 10.1103/physrevb.43.11207 UR - https://pubmed.ncbi.nlm.nih.gov/9996860/ ID - 9996860 ER -