UMAMAHESHWARA RAO W; REDDY, L.; JOSHI, S. D. Comparison of intrathecal isobaric ropivacaine plus dexmedetomidine and isobaric ropivacaine plus clonidine for elective lower abdominal and lower limb surgeries. Academia Anesthesiologica International, v. 1, n. 1, p. 33-35, 15 Jun. 2016.