DishanD.SinghDishanD., Nils Silfverskiöld (1888-1957) and gastrocnemius contracture, „Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons”, 19 (2), 2013, s. 135–138, DOI: 10.1016/j.fas.2012.12.002, ISSN1460-9584, PMID: 23548458 [dostęp 2019-02-16].
DishanD.SinghDishanD., Nils Silfverskiöld (1888-1957) and gastrocnemius contracture, „Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons”, 19 (2), 2013, s. 135–138, DOI: 10.1016/j.fas.2012.12.002, ISSN1460-9584, PMID: 23548458 [dostęp 2019-02-16].
DishanD.SinghDishanD., Nils Silfverskiöld (1888-1957) and gastrocnemius contracture, „Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons”, 19 (2), 2013, s. 135–138, DOI: 10.1016/j.fas.2012.12.002, ISSN1460-9584, PMID: 23548458 [dostęp 2019-02-16].