1. Performance of adjustable pressure limiting (APL) valves in two different modern anaesthesia machines;Thomas;Anaesthesia,2017
2. GE Healthcare Response: performance of adjustable pressure limiting (APL) valves in two different modern anaesthesia machines;McCormick;Anaesthesia,2017
3. Medical electrical equipment - Part 2-13: Particular requirements for basic safety and essential performance of an anaesthetic workstation Geneva ISO 2011
4. Lung ventilators and related equipment - Vocabulary and Semantics Geneva ISO 2016 https://www.iso.org/obp/ui/%20#iso:std:iso:19223:dis:ed-1:v1:en
5. Human factors and usability engineering - guidance for medical devices including drug-device Combination Products Draft for comment London MHRA 2016 https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/528495/MHRA_Human_factors_draft_guidance_June_2016.pdf