The "father of Early Southeast Asian History", George Coedès, has said: "By the middle of the 3rd century Fu-nan had already established relations with China and India, and it is doubtless on the west coast of the Gulf of Siam that the furthest point reached by Hellenistic navigators is to be found, that is the harbour of Kattigara mentioned by Ptolemy". A.H. Christie said in 1979 that "the presence of objects, however few in number, from the Roman Orient" added some weight to the conjecture that Óc-eo was the Ptolemaic Kattigara. The distinguished German classical scholar, Albrecht Dihle, supported this view, saying: