Lehto, Olli. Ed.,
Proceedings of the International Congress of Mathematicians, Helsinki Volume. 1 - Hallituskatu Helsinki 1980 - 506
9514103521
51(082.2) / PRO
Proceedings of the International Congress of Mathematicians, Helsinki Volume. 1 - Hallituskatu Helsinki 1980 - 506
9514103521
51(082.2) / PRO