André MarkemannA. StemmerMarianna Siegmund‐SchultzeHans‐Peter PiephoA. Valle Zárate2026-03-222026-03-22200910.1016/j.livsci.2009.01.011https://doi.org/10.1016/j.livsci.2009.01.011https://andeanlibrary.org/handle/123456789/45209Citaciones: 29enRanking (information retrieval)Wilcoxon signed-rank testSubsistence agriculturePopulationHerdStatisticsRank (graph theory)GeographyPreferenceMathematicsStated preferences of llama keeping functions in Boliviaarticle