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2. Arnold, D.N., Awanou, G.: The serendipity family of finite elements. Found. Comput. Math. 11(3), 337–344 (2011). doi:
10.1007/s10208-011-9087-3
3. Arnold, D.N., Awanou, G.: Finite element differential forms on cubical meshes. Preprint (2012). URL:
http://arxiv.org/pdf/1204.2595
4. Arnold, D.N., Boffi, D., Bonizzoni, F.: Approximation by tensor product finite element differential forms (2012, in preparation)
5. Arnold, D.N., Falk, R.S., Winther, R.: Finite element exterior calculus, homological techniques, and applications. Acta Numer. 15, 1–155 (2006). MR MR2269741 (2007j:58002)