Gerd Kaupp. Undue Hardness/Modulus Ratio Claims instead of Physical Penetration Resistance and Applications with Mollusk Shells: A Recent Study. BMPCMPI [Internet]. 2022 Oct. 28 [cited 2026 Jun. 12];:210-23. Available from: https://stm.bookpi.org/BMPCMPI/article/view/8540