1. Derivation of the respiratory rate from directly and indirectly measured respiratory signals using autocorrelation: https://www.degruyter.com/document/doi/10.1515/cdbme-2016-0054/html 2. RespInPeace: Toolkit for Processing Respiratory Belt Data: https://www.diva-portal.org/smash/get/diva2:1354724/FULLTEXT01.pdf 3. Biopac: Guidelines for obtaining better respiration data when using a respiration belt transducer 4. Adinstruments: Breathing rate calculated from respiratory belt data: https://www.adinstruments.com/research/human/respiratory/respiratory-belts