The application of phytoremediation method to wastewater treatment of nickel ore extraction industry based on the expert stakeholder perspectiveErikha Maurizka Mayzarah, Setyo Sarwanto Moersidik and Lana SariaE3S Web Conf., 74 (2018) 06002DOI: https://doi.org/10.1051/e3sconf/20187406002