1. Contrihution a la connaisance cytotaxonomique des Spermatophyta du Portugal. VIII.;Barros;Liliaceae. Boletim da Sociedade Brotmhna. Sm,1973
2. Variation in genomic form in plants and its ecological implications.;Bennett;New Phytologist,1987
3. Structural chromosome polymorphism in diploid Leopoldia weisii (Freyn) Freyn ex Heldr.;Bentzer;(Liliaceae). Botanische Notiser,1972
4. Chromosome numbers of vascular plants from the Canary Islands, with special reference to the occurrence of polyploidy.;Borgen;Nytt Magasin for Botanikk,1969