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2. ASTM Standard: Standard Test Method for Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials by Four-Point Bending
3. Autar, K.: Mechanics of Composite Materials. Taylor & Francis Group, Boca Raton, London, New York. ISBN 0-8493-1343-0 (2006)
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5. ASTM Standard 1875-00e1: Standard Test Method For Dynamic Young’s Modulus, Shear Modulus, and Poisson’s Ratio by Sonic Resonance. ASTM International