Heinrich, T., Böttcher, H., Bartoszyk, G. D., Schwartz, H., Anzali, S., März, J., … Seyfried, C. A. (2004). Bioisosterism of Fluorine and Cyano as Indole Substituents. Theoretical, in vitro and in vivo Examination. CHIMIA, 58(3), 143. https://doi.org/10.2533/000942904777678118