Cambodian scholars have appealed to Thai protesters to stop demanding the 4.6 square kilometers of land near the 11th-century Khmer Preah Vihear temple.
They cited the border treaty between Siam (Thailand) and the Cambodian French colony in 1904-1907, as well as the verdict of the International Court of Justice in 1962 that Preah Vihear belongs to Cambodia.
In July 2008, UNESCO approved Cambodia's bid to list Preah Vihear Temple as a World Heritage Site.
Since then, the temple and the disputed area around it have become the site of a border conflict between Cambodia and Thailand.
Activists from Thailand's People Alliance for Democracy (PAD) clashed with police and local villagers near the ancient temple on Saturday. Dozens of people were injured as thousands of nationalists turned violent while trying to reach the temple.
The protesters dispersed on Sunday, after making speeches in an event monitored by the Thai army.
Despite progress made by the two countries in resolving the problem, the latest incident indicates that the dispute will remain an issue as political players in Thailand continue to use it to inflame passions.
Cambodian scholars ask Thai "Yellow Shirts" to respect international laws, 21 September 2009,
Thai nationalists disperse, 21 September 2009,
Thai clashes at Cambodia border, 19 September 2009,