I.K. Sarma, Ancient Maritime Routes: More Artefactual Evidences, Studia Asiatica, vols. 4-5 (2003-2004), pp. 771-778, at p. 777. This king's inscription is dated 1244 CE. It mentions sea trade and its dangers. China (Chīni) is mentioned.
E. Hultzsch, Motupalli Inscription of Gaṇapatideva A.D. 1244-1245, Epigraphia Indica, vol. 12, pp. 195-197.
