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Books about Zaanen:
Operator Theory in Function Spaces and Banach Lattices: Essays dedicated to A.C. Zaanen on the occasion of his... by C.B. Huijsmans, M.A. Kaashoek, W.A.J. Luxemburg and B.de Pagter (Oct 4, 2013)
From A to Z: Proceedings of a Symposium in Honour of A.C. Zaanen by and Kaashoek and Luxemburg and Vietsch Huijsmans (1982)