Humphrey, Andrew J.; O'Hagan, David (2001). “Tropane alkaloid biosynthesis. A century old problem unresolved”. Natural Product Reports18 (5): 494–502. doi:10.1039/b001713m. ISSN02650568.
Birch, Arthur John; King-Hele, Desmond George (1993). “Investigating a scientific legend: the tropinone synthesis of Sir Robert Robinson, F. R. S”. Notes and Records of the Royal Society of London47 (2): 277–296. doi:10.1098/rsnr.1993.0034. ISSN0035-9149.
Humphrey, Andrew J.; O'Hagan, David (2001). “Tropane alkaloid biosynthesis. A century old problem unresolved”. Natural Product Reports18 (5): 494–502. doi:10.1039/b001713m. ISSN02650568.
Birch, Arthur John; King-Hele, Desmond George (1993). “Investigating a scientific legend: the tropinone synthesis of Sir Robert Robinson, F. R. S”. Notes and Records of the Royal Society of London47 (2): 277–296. doi:10.1098/rsnr.1993.0034. ISSN0035-9149.