Kjonaas, R.B., Venkatachalam, K.V. and Croteau, R. (1985). „Metabolism of monoterpenes: oxidation of isopiperitenol to isopiperitenone, and subsequent isomerization to piperitenone by soluble enzyme preparations from peppermint (Mentha piperita) leaves”. Arch. Biochem. Biophys.238: 49-60. PMID3885858.