Krishna, Galla Vamsi, et al. “A New Validated Stability Indicating Ion-Pair HPLC Method for Evaluation of Impurities of Pramipexole from Low Dose Extended Release Formulation”. Asian Journal of Chemistry, vol. 29, no. 4, Jan. 2017, pp. 923-8, doi:10.14233/ajchem.2017.20397.