Philipowski, J.F., Dedecek, R.A. and Medrado, M.J.S. (2004) “Influence of different winter soil cover plants and soil tillage systems on erva-mate (Ilex paraguariensis St. Hil.) productivity, in Ponta Grossa,PR”, Pesquisa Florestal Brasileira, (48), pp. 3–13. Available at: https://pfb.sede.embrapa.br/pfb/article/view/1592 (Accessed: 13 September 2026).