(with Y. Gordon) Absolutely summing maps and local unconditional structures, Acta Math. 133 (1974), 27-48.
An isomorphic characterization of the Schmidt class, Compositio Math. 30 (1975), 293-297.
Ellipsoids defined by Banach ideal norms, Mathematika 26 (1979), 18-29.
Finite dimensional subspaces of Lp, Studia Math. 63 (1978), 207-212.
The dimensions of complemented Hilbertian subspaces of uniformly convex Banach lattices, Compositio Math. 50 (1983), 83-92.
An upper bound for the projection constant, Proc. AMS 103 (1988), 1157-1160.
(with Y. Gordon) Dvoretsky's theorem for quasi-normed spaces, Illinois J. Math. 35 (1991), 250-259.