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1. Income derived by a resident of a Contracting State in respect of professional services or other activities of an independent character shall be taxable only in that State, unless the remuneration for such services or activities is paid by a company resident of the other Contracting State or is borne by a permanent establishment situated therein. In such case, the income may be taxed in that other State.
2. The term “professional services” includes espeacially independent scientific, technical, literary, artistic, educational or teaching activities as well as the independent activities of physicians, lawyers, engineers,architects, dentists and accountants.