TY - RPRT TI - Ewens' sampling formula and related formulae: combinatorial proofs, extensions to variable population size and applications to ages of alleles. AU - Robert C Griffiths AU - Sabin Lessard PY - 2005 DO - 10.1016/j.tpb.2005.02.004 UR - https://pubmed.ncbi.nlm.nih.gov/15913688/ ID - 15913688 ER -