%0 Journal Article %A Cobos Díaz, Fernando %A Fernández-Martínez, Pedro %A Martínez, Antón %T On reiteration and the behaviour of weak compactness under certain interpolation methods %D 1999 %@ 0010-0757 %U https://hdl.handle.net/20.500.14352/58672 %X This article deals with K- and J-spaces defined by means of polygons. First we establish some reiteration formulae involving the real method, and then we study the behaviour of weakly compact operators. We also show optimality ofthe weak compactness results. %~