Seflek, I., Y. E. Acar, and E. Yaldiz. “Small Motion Detection and Non-Contact Vital Signs Monitoring With Continuous Wave Doppler Radars”. Elektronika Ir Elektrotechnika, vol. 26, no. 3, June 2020, pp. 54-60, doi:10.5755/j01.eie.26.3.25810.