%0 Journal Article %A F. J. Dyson %T Existence of a phase-transition in a one-dimensional Ising ferromagnet %J Matematika %D 1972 %P 137-152 %V 16 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAT_1972_16_2_a4/ %G ru %F MAT_1972_16_2_a4