Baden (Halácsy) 1985 - Baden C (1985) Biosystematic Studies in the Nepeta sibthorpii Group. N. heldreichii Included in N. camphorata. Willdenowia 14(2): 335-341. Retrieved from http://www.jstor.org/stable/3996248
There is no corrections for Nepeta camphorata var. heldreichii yet.