“Assessment of spread and distribution pattern of contrast dye injected under ultrasound guidance in the transverse abdominal plane. A cadaveric study”, PMJUA, vol. 2, no. 2, pp. 70–74, Jun. 2017, Accessed: Jul. 12, 2026. Available: https://painmedicine.org.ua/index.php/pnmdcn/article/view/56