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Nissen R (1961). «Gastropexy and "Fundoplication" in Surgical Treatment of Hiatal Hernia». The American Journal of Digestive Diseases6 (10): 954-61. PMID14480031. S2CID29470586. doi:10.1007/BF02231426.
Nissen R (1961). «Gastropexy and "Fundoplication" in Surgical Treatment of Hiatal Hernia». The American Journal of Digestive Diseases6 (10): 954-61. PMID14480031. S2CID29470586. doi:10.1007/BF02231426.