1.
Taxonomic Considerations on Metastelmatinae (Apocynaceae) Based on Plastid and Nuclear DNA
by Soares e Silva, Uiara Catharina
Systematic botany, 2012, Vol.37 (3), p.795-806

2.
Is the DSM-III-R category of mood disorders too broad? Personality findings
by Sauer, H
European archives of psychiatry and clinical neuroscience, 1992, Vol.242 (1), p.34-38
