Spiral crack patterns observed for melt-grown spherulites of poly(L-lactic acid) upon quenchingFutoshi Matsuda, Takamasa Sobajima, Satoshi Irie and Takashi SasakiEur. Phys. J. E, 39 4 (2016) 41DOI: https://doi.org/10.1140/epje/i2016-16041-6