Laksono, R. M. “Transsacrococcygeal Neurolytic Block of Ganglion Impar in Vulvar Carcinoma: A Case Report”. Anaesthesia, Pain & Intensive Care, Vol. 22, no. 1, Jan. 2019, pp. 98-00, https://mail.apicareonline.com/index.php/APIC/article/view/2.