An engineering approach to time-frequency uncertainty criteriaUdal, Andres; Kukk, VelloElektronika ir elektrotechnika. T 121, Signalu technologija = Electronics and electrical engineering. T121, Signal technology2012 / p. 3-8 : ill https://www.researchgate.net/publication/268434924_An_Engineering_Approach_to_Time-Frequency_Uncertainty_Criteria