C. Jhansi, M. Y. S. Harshini, K. Sandeep, P. C. Rao, and C. H. C. Lakshmi, “COMPARISION OF EFFICACYAND SAFETY OF ORAL LABETALOL AND NIFEDIPINE IN PREECLAMPSIA: A PROSPECTIVE OBSERVATIONAL STUDY”, Int J Pharm Pharm Sci, vol. 7, no. 9, pp. 277–280, Sep. 2015.