1. Andoyo, 1936, Hand-written, signed, one-page letter, written in Malay and dated 19 February, 1936, that describes the discovery of specimen No. 173A, a hominid calvaria, north of Perning village (now in Desa Kepuhklagen, Kecamatan Wringinanom, Kapupaten Gresik) East Java
2. Developmental age and taxonomic affinity of the Mojokerto child, Java, Indonesia;Anton;Am. J. phys. Anthrop.,1997
3. Aziz, F. 1998, New insight on the Pleistocene fauna of Sangiran and other hominid sites in Java
4. Premier peuplement par les mammifères d'une region de Java Est, à la fin du Pliocene: âge de la faune du Gunung Butak, près de Kendungbrubus (Indonesie);Bandet;C. r. Acad. Sci., Paris,1989
5. The river-laid strata near Trinil, site of Homo erectus erectus, Java, Indonesia;Bartstra;Modern Quaternary Research in Southeast Asia,1982