1. A Catalogue of Standardized Thin Layer Chromatographic Data and Biosynthetic relationships for Lichen Substances;Elix J.A.,1993
2. New chloro-depsides from the lichen Dimelaena radiata;Elix J.A.;Bibliotheca Lichenologica
3. New species and records of Lepraria (Stereocaulaceae, lichenized Ascomycota) from South America;Flakus A.;The Lichenologist
4. Chemotaxonomy of Lepraria Ach. and Leproloma Nyl. ex Crombie, with particular reference to Central Europe;Leuckert Ch.;Bibliotheca Lichenologica
5. Lichenology in Latin America: history, current knowledge and applications;Marcelli M.P.,1998