# The Social Security (Austria) Order 1987, Part Article III


(1) supplementary Convention shall be ratified and the instruments of ratification shall be exchanged at Vienna as soon as possible.
(2) This supplementary Convention shall enter into force on the first day of the third month following the month in which the instruments of ratification are exchanged.

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Source: https://www.legislation.gov.uk/uksi/1987/1830/schedule/part/3 (the official version)
Page: https://openlegislation.uk/social-security-austria-order-1987/schedule/part-3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.