B.-H. Huang, K. Nishii, C.-N. Wang, and M. Möller, “QUANTITATIVE ASSESSMENT OF ANISOCOTYLY IN HABERLEA RHODOPENSIS AND RAMONDA MYCONI”, Edinburgh J. Bot., vol. 76, no. 3, pp. 377–391, Jun. 2019, doi: 10.1017/S0960428619000179.