ARTICLE 19
Professors and Researchers
Subject to the provisions of Article 18 an individual who is or was a resident of a Contracting State immediately before visiting the other Contracting State, solely for the purpose of teaching or scientific research at an university, college, school, or other similar educational or scientific research institution which is recognized as non-profitable by the Government of that other State, or under an official programme of cultural exchange, for a period not exceeding two years from the date of his first arrival in that other State, shall be exempt from tax in that other State on his remuneration for such teaching or research.