The Resistance of the Human Dura Mater to Needle Penetration
Edmundo Zarzur, JosÉ Jorge Goncalves
Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control Jul 1992, 17 (4) 216-218; DOI: 10.1136/rapm-00115550-199217040-00007