Francois J.Singelyn, Jean-Marie A.Gouverneur, Bernard F.Gribomont
Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control Sep 1991, 16 (5) 278-281; DOI: 10.1136/rapm-00115550-199116050-00008
Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control Apr 1984, 9 (2) 73-77; DOI: 10.1136/rapm-00115550-198409020-00005