1. The inguinal paravascular technic of lumbar plexus anesthesia: the “3 in 1 block”;Winnie;Anesth Analg.,1973
2. Plexus blocks for lower extremity surgery: new answers to old problems;Winnie;Anesthesiology Review.,1974
3. The psoas compartment block;Chayen;Anesthesiology.,1976
4. Extent of blockade with various approaches to the lumbar plexus;Parkinson;Anesth Analg.,1989
5. Lumbar plexus block: an anatomical study;Hanna;Anaesthesia.,1993