1. Kowalski, J., Radwan, L.: Development of respiratory function investigation in Poland - historical review. Adv. Respir. Med. 77(5), 487–493 (2009)
2. Alejos-Palomares, R., Ramírez Cortes, J.M., Domínguez-Martinez, N.: Digital spirometer with LabView interface. In: 18th International Conference on Electronics, Communications and Computers, CONIELECOMP, Cholula, pp. 105–110. IEEE (2008)
3. Shaikh, J.G., Daimiwal, N.M.: Respiratory parameter measurement and analysis using differential pressure sensor. In: International Conference on Communication and Signal Processing (ICCSP), pp. 0845–0848 (2017)
4. WHO Homepage.
https://www.who.int/en/news-room/fact-sheets/detail/chronic-obstructive-pulmonary-disease-(copd
). Accessed 24 Mar 2019
5. Zejda, J., Brozek, G.: Chronic obstructive pulmonary disease in Poland - a need for population-based epidemiological studies. Adv. Respir. Med. 84(4), 203–204 (2016)