1. The crested gibbon, Hylobates (Nomascus) concolor Harlan, 1826, in the Nam Cat Tien Reserve, southern Vietnam;Adler;Primate Report,1991
2. Inheritance of stereotyped gibbon calls;Brockelman;Nature,1984
3. Female solo singing by a wild lar gibbon in peninsular Malaysia;Caldecott;Malayan Nature Journal,1983