Maciel, Carlos Dias, and Lana Ribeiro da Fonseca Monteiro. 2004. “Measurements in Time-Frequency Diagrams Employed in the Characterization of State Transitions Using Scattered Ultrasound Signals During Blood Clotting: A Numerical Analysis”. Semina: Ciências Exatas E Tecnológicas 21 (4):35-45. https://doi.org/10.5433/1679-0375.2000v21n4p35.