TY - JOUR AU - Tempelmann, Sebastian AU - Kaminski, Juliane AU - Liebal, Katja PY - 2011 TI - Focus on the essential: All great apes know when others are being attentive. JO - Animal Cognition VL - 14 IS - SP - 433 EP - 439 UR - https://link.springer.com/article/10.1007/s10071-011-0378-5 ER -