Citation: Sj. Wiegrefe et al., THE ULMACEAE, ONE FAMILY OR 2 - EVIDENCE FROM CHLOROPLAST DNA RESTRICTION SITE MAPPING, Plant systematics and evolution, 210(3-4), 1998, pp. 249-270
Citation: Sj. Wiegrefe et al., PHYLOGENY OF ELMS (ULMUS, ULMACEAE) - MOLECULAR EVIDENCE FOR A SECTIONAL CLASSIFICATION, Systematic botany, 19(4), 1994, pp. 590-612