TY - RPRT TI - Coping with the node problem in quantum hydrodynamics: the covering function method. AU - Dmytro Babyuk AU - Robert E Wyatt PY - 2004 DO - 10.1063/1.1801211 UR - https://pubmed.ncbi.nlm.nih.gov/15538843/ ID - 15538843 ER -