Survey of the Southern Provinces of Cambodia in the Pre-Angkor Era by Haksrea Kuoch South of Phnom Penh, archaelogical research have contributed to a better understanding of the Funan and Chenla periods. In English
Quelques aspects du chamanisme et des cultes de possession en Asie du Sud-Est (Shamanism and Mediums in Southeast Asia) by Georges Condominas Shamanism, trance and medium practices across Southeast Asia, a study by famous ethnologist Georges Condominas. In French