1. Chromosome numbers in the genus Mentha L.
2. S. Kokkini,Chemical races within the genusMenthaL. In: ModernMethods of Plant Analysis. Edits. H.F. Linkens and J.F. Jackson, New Series 12, pp. 61–75, Springer, Berlin (1991).
3. B.M. Lawrence,A study of the monoterpene interrelationships in the GenusMenthawith special reference to the origin of pulegone and menthofuran. Doktora tezi, Gröningen State University, Gröningen (1978).