Synthesis and Biological Evaluation of Novel Selenyl and Sulfur-<span style="font-variant: small-caps">l</span>-Dopa Derivatives as Potential Anti-Parkinson’s Disease Agents oleh Antonio Di Stefano, Lisa Marinelli, Piera Eusepi, Michele Ciulla, Stefania Fulle, Ester Sara Di Filippo, Laura Magliulo, Giuseppe Di Biase, Ivana Cacciatore