Before revision: It was further amended in the 3rd Constituent Assembly, Colombo, Sri Lanka, 1979 and the 4th World Constituent Assembly, Troia, Portugal, in 1991.
After revision: It was further amended in the 3rd Constituent Assembly, Colombo, Sri Lanka, 1978-79 and the 4th World Constituent Assembly, Troia, Portugal, in 1991.