[Tyszka et al., 2000]
J. Michael Tyszka, David H. Laidlaw, Joseph W. Asa, Jeffrey, and M. Silverman. Three-dimensional Time-resolved (4D) Relative Pressure Mapping using Magnetic Resonance Imaging. Journal of Magnetic Resonance Imaging, 12(2):321-329, August 2000. (pdf) (bibtex: Tyszka-2000-TTR).