NARITA, F.; LIN, S.; SHINDO, Y. Penny-shaped crack in a piezoceramic cylinder under Mode I loading. Archives of Mechanics, Warsaw, Poland, v. 55, n. 3, p. 275–304, 2003. Disponível em: https://am.ippt.pan.pl/index.php/am/article/view/v55p275. Acesso em: 19 nov. 2025.