APA Citation

(Helsinki), I. C. o. M. (., & Lehto, O. (1980). Proceedings of the International Congress of Mathematicians Helsinki 1978. Helsinki : Department of Mathematics University.

Chicago Style Citation

(Helsinki), International Congress of Mathematicians (1978), and Olli Lehto. Proceedings of the International Congress of Mathematicians Helsinki 1978. Helsinki : Department of Mathematics University, 1980.

MLA Citation

(Helsinki), International Congress of Mathematicians (1978), and Olli Lehto. Proceedings of the International Congress of Mathematicians Helsinki 1978. Helsinki : Department of Mathematics University, 1980.

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