1. Adams, R.P.: Chemosystematic and numerical studies in natural populations of Juniperus. Ph.D. Thesis, University of Texas, Austin (1969).
2. Adams, R.P.: Seasonal variation of terpenoid constituents in natural populations of Juniperus pinchotii Sudw. Phytochemistry 9, 397–402 (1970).
3. Adams, R.P., Turner, B.L.: Chemosystematic and numerical studies of natural populations of Juniperus ashei. Taxon 19, 728–751 (1970).
4. Akimov, Y.A., Kuznetsov, S.I.: Evaluation of the essential oil from the vegetative organs of species and forms of Cedrus. Rastit. Resur. 8, 562–565 (1972). For. Abstr. (Oxford) 34, 3156 (1973).
5. Akimov, Y.A., Kuznetsov, S.I.: Essential oil composition of Pinus hamata. Rastit. Resur. 10, 413–418 (1974).