1. ^{{cite journal | vauthors = Steele CL, Crock J, Bohlmann J, Croteau R | title = Sesquiterpene synthases from grand fir (Abies grandis). Comparison of constitutive and wound-induced activities, and cDNA isolation, characterization, and bacterial expression of delta-selinene synthase and gamma-humulene synthase | journal = The Journal of Biological Chemistry | volume = 273 | issue = 4 | pages = 2078–89 | date = January 1998 | pmid = 9442047 | doi = 10.1074/jbc.273.4.2078 }}
2. ^{{cite journal | vauthors = Little DB, Croteau RB | title = Alteration of product formation by directed mutagenesis and truncation of the multiple-product sesquiterpene synthases delta-selinene synthase and gamma-humulene synthase | journal = Archives of Biochemistry and Biophysics | volume = 402 | issue = 1 | pages = 120–35 | date = June 2002 | pmid = 12051690 | doi = 10.1016/S0003-9861(02)00068-1 }}