Ecological engineering of the sixth innovation wave in system of continuous training and Municipal Facilities DevelopmentAnatoly Lepeshev, Vasiliy Kuimov, Olesya Sidorkina, Anatoliy Kozlov and Tatyana PogrebnayaMATEC Web Conf., 170 (2018) 04006DOI: https://doi.org/10.1051/matecconf/201817004006