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Braun, U; Hoegger, R; Haessig, M (2009). Colour-Doppler sonography of the musculophrenic vein in cows. Veterinary Journal, 179(3):451-454.
Braun, U; Hoegger, R (2008). B-mode and colour Doppler ultrasonography of the milk vein in 29 healthy Swiss braunvieh cows. Veterinary Record, 163(2):47-49.