Jan Bartlema2026-03-222026-03-22198810.1007/bf01796894https://doi.org/10.1007/bf01796894https://andeanlibrary.org/handle/123456789/55391Citaciones: 2enKinshipFertilityMacroDemographyPopulationIdentification (biology)Mating systemStatisticsGenealogyComputer scienceModelling step-familiesarticle