@article{trosdtorf jr._assine_vesely_rocha-campos_santos_tomio_2005,  title={Glacially striated, soft sediment surfaces on late Paleozoic tillite at São Luiz do Purunã, PR},  volume={77},  ISSN={0001-3765},  url={https://doi.org/10.1590/S0001-37652005000200013},  DOI={10.1590/S0001-37652005000200013},  number={2},  journal={Anais da Academia Brasileira de Ciências},  publisher={Academia Brasileira de Ciências},  author={Trosdtorf Jr., Ivo and Assine, Mario L. and Vesely, Fernando F. and Rocha-Campos, Antonio C. and Santos, Paulo R. dos and Tomio, Alexandre},  year={2005},  month={Jun},  pages={367–378} }