ChemInform Abstract: Enantioselective Michael Addition of 4‐Hydroxycoumarins to β, γ‐Unsaturated α‐Oxophosphonates Catalyzed by a Bifunctional Squaramide Bearing a Structurally Rigid 9, 10‐Ethylene‐9, 10‐dihydroanthracene Skeleton. Issue 36 (15th August 2013)