1. Establishing Best Practices on the Production, the Processing and the Marketing of Meat from Uncastrated Pigs or Pigs Vaccinated Against Boar Taint (Immunocastrated)—Final Report
https://ec.europa.eu/food/sites/food/files/animals/docs/aw_prac_farm_pigs_cast-alt_establishing-best-practices.pdf
2. European Declaration on Alternatives to Surgical Castration of Pigs
https://ec.europa.eu/food/sites/food/files/animals/docs/aw_prac_farm_pigs_cast-alt_establishing-best-practices.pdf
3. Labour time required for piglet castration with isoflurane-anaesthesia using shared and stationary inhaler devices;Weber;Berl. Munch. Tierarztl. Wochenschr.,2014
4. Pig Castration: Methods of Anaesthesia and Analgesia for All Pigs and Other Alternatives for Pigs Used in Traditional Products
https://www.boarsontheway.com/wp-content/uploads/2018/09/Castrum-study.pdf
5. Erfahrungen zur Schmerzausschaltung bei der Ferkelkastration in der Schweiz Teil 1: Inhalationsanästhesie