1. in ‘Advances in Labiate Science’, Eds. R. M. Harley, T. Reynolds, Royal Botanic Gardens, Kew, UK, 1992, p. 7.
2. The Genus Salvia (Labiatae) in Colombia
3. in ‘Advances in Labiate Science’, Eds. R. M. Harley, T. Reynolds, Royal Botanic Gardens, Kew, UK, 1992, p. 231.
4. Structure elucidation and total synthesis of new tanshinones isolated from Salvia miltiorrhiza Bunge (Danshen)
5. in ‘Advances in Labiate Science’, Eds. R. M. Harley, T. Reynolds, Royal Botanic Gardens, Kew, UK, 1992, p. 299;