Paper machine

Lafond, Emmanuel, Ted Jackson, Gary Baum, Xinya Zhang, Paul L Ridgway, and Richard E Russo. "Laser Ultrasonics at 20 m/s in the production environment and on a budget: from dream to reality." IEEE Ultrasonics Symposium, 2005.IEEE Ultrasonics Symposium, 2005. Vol. 2. Rotterdam, The Netherlands: IEEE, 2005. 1003–1006.