Rallapalli, P., and U. Gollamudi. “Unilateral Spinal Anesthesia With Fractionated Low-Dose Hyperbaric Ropivacaine and Fentanyl Can Enhance Hemodynamic Control in High-Risk Lower Limb Surgeries: A Case Series”. Anaesthesia, Pain & Intensive Care, Vol. 29, no. 1, Feb. 2025, pp. 112-8, doi:10.35975/apic.v29i1.2655.