Tollsten, L.; Knudsen, J. T.; Bergström, L. G. (1994). "Floral Scent in Generalistic Angelica (Apiaceae) — An Adaptive Character?". Biochemical Systematics and Ecology. 22 (2): 161–169. Bibcode:1994BioSE..22..161T. doi:10.1016/0305-1978(94)90006-X.
Tollsten, L.; Knudsen, J. T.; Bergström, L. G. (1994). "Floral Scent in Generalistic Angelica (Apiaceae) — An Adaptive Character?". Biochemical Systematics and Ecology. 22 (2): 161–169. Bibcode:1994BioSE..22..161T. doi:10.1016/0305-1978(94)90006-X.