Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Josep Call,Spatial rotations and transpositions in orangutans (Pongo pygmaeus) and chimpanzees (Pan troglodytes),Primates,00328332,[Tokyo] : [Springer Japan],2003-10,44,4,347-357,https://cir.nii.ac.jp/crid/1520010380878069888,