Manipulation of Single Biomolecules (pulling DNA), Terence Strick, Jean-François Allemand, Vincent Croquette, and David Bensimon, Physics Today, October 2001.
Lindner, D., Marretta, S., Pijanowski, G., Johnson, A., Smith, C. "Measurement of bite force in dogs: a pilot study." Journal of Veterinary Dentistry. 1 June 1995, Vol. 12, No. 2: 49-52.
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The Mechanical Universe and Beyond
Newton's Laws, Newton lays down the laws of force, mass, and acceleration.
