(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.
Figyelmeztetés: Nem biztos, hogy ezek a forráshivatkozások 100%-ig pontosak.