Goerig, Michael; Bacon, Douglas; van Zundert, André (2012). "Carl Koller, cocaine, and local anesthesia: some less known and forgotten facts". Regional Anesthesia and Pain Medicine. 37 (3): 318–324. doi:10.1097/AAP.0b013e31825051f3. ISSN1532-8651. PMID22531385.
Rasche D, Ruppolt M, Stippich C, Unterberg A, Tronnier VM (2006). "Motor cortex stimulation for long-term relief of chronic neuropathic pain: a 10 year experience". Pain. 121 (1–2): 43–52. doi:10.1016/j.pain.2005.12.006. PMID16480828. S2CID24552444.
Goerig, Michael; Bacon, Douglas; van Zundert, André (2012). "Carl Koller, cocaine, and local anesthesia: some less known and forgotten facts". Regional Anesthesia and Pain Medicine. 37 (3): 318–324. doi:10.1097/AAP.0b013e31825051f3. ISSN1532-8651. PMID22531385.
Rasche D, Ruppolt M, Stippich C, Unterberg A, Tronnier VM (2006). "Motor cortex stimulation for long-term relief of chronic neuropathic pain: a 10 year experience". Pain. 121 (1–2): 43–52. doi:10.1016/j.pain.2005.12.006. PMID16480828. S2CID24552444.
Boswell MV, Trescot AM, Datta S, Schultz DM, Hansen HC, Abdi S, Sehgal N, Shah RV, Singh V, Benyamin RM, Patel VB, Buenaventura RM, Colson JD, Cordner HJ, Epter RS, Jasper JF, Dunbar EE, Atluri SL, Bowman RC, Deer TR, Swicegood JR, Staats PS, Smith HS, Burton AW, Kloth DS, Giordano J, Manchikanti L (2007). "Interventional techniques: evidence-based practice guidelines in the management of chronic spinal pain"(PDF). Pain Physician. 10 (1): 7–111. PMID17256025. Archived from the original(PDF) on August 28, 2008.
Rasche D, Ruppolt M, Stippich C, Unterberg A, Tronnier VM (2006). "Motor cortex stimulation for long-term relief of chronic neuropathic pain: a 10 year experience". Pain. 121 (1–2): 43–52. doi:10.1016/j.pain.2005.12.006. PMID16480828. S2CID24552444.
Goerig, Michael; Bacon, Douglas; van Zundert, André (2012). "Carl Koller, cocaine, and local anesthesia: some less known and forgotten facts". Regional Anesthesia and Pain Medicine. 37 (3): 318–324. doi:10.1097/AAP.0b013e31825051f3. ISSN1532-8651. PMID22531385.