Barrier height titration by tunable photoionization combined with chemical monitoring: unimolecular keto/enol tautomerization of the acetamide cation radical
Angew Chem Int Ed Engl. 2002 Aug 2;41(15):2748-51.
doi: 10.1002/1521-3773(20020802)41:15<2748::AID-ANIE2748>3.0.CO;2-V.