Velolity estimation using recursive ultrasound imaging

@inbook{ref_nikolov_et_al_2000,
title     = "Velocity estimation using recursive ultrasound imaging and
spatially encoded signals",
publisher = "IEEE",
author    = "Svetoslav Nikolov and Kim Gammelmark and Jensen, {Jørgen
Arendt}",
year      = "2000",
doi       = "10.1109/ULTSYM.2000.921602",
isbn      = "0-7803-6365-5",
pages     = "1473-1477",
booktitle = "Ultrasonics Symposium, 2000 IEEE",
}