Lehto, Olli. Ed.,
Proceedings of the International Congress of Mathematicians, Helsinki Volume. 2 - Hallituskatu Helsinki 1980 - 509-1022
9514103521
51(082.2) / PRO
Proceedings of the International Congress of Mathematicians, Helsinki Volume. 2 - Hallituskatu Helsinki 1980 - 509-1022
9514103521
51(082.2) / PRO