G. Swetha, M. Prathyusha and Santhosh pawar V. B. Snigdha 2015. Synthesis of novel β-carboline derivatives with potential antimicrobial and anti helminthic activities. International Journal of Pharmacy and Analytical Research. 4, 1 (Jan. 2015), 21–29. DOI:https://doi.org/10.61096/ijpar.v4.iss1.2015.21-29.