Identification of a human respiratory model by using the switched flow resistance method / Gabriel BUCHAŁA, Tomasz TWARDOWSKI // W: Proceedings of the fifth national conference on Application of mathematics in biology and medicine : Ustrzyki Górne, September 14–17 1999 / Institute of Electronics, University of Mining and Metallurgy ; Department of Forest Engineering, Agricultural University of Cracow. — Kraków : POLDEX, [1999]. — S. 26–31. — Bibliogr. s. 31, Abstr.

THD [Total Harmonic Distortion] factor measurement with using watch filtration of the fundamental frequency / Andrzej BIEŃ, Gabriel BUCHAŁA, Adam MOROŃCZYK // W: EPQU '99 : Electrical Power Quality and Utilisation : 5th [fifth] international confernce : September 15–17,1999, Cracow : proceedings. — Cracow : [s. n.], 1999. — S. 217–221. — Bibliogr. s. 221. — Abstr.