The detection of Escherichia coli biofilm in green oak with spectroscopic imaging techniques based on confocal laser scanning microscopeJintaphorn Klinsuk, Natphichon Budtri, Suwan Aekrum, Pattarapong Sunongbua, Charoonsak Somphong and Weerasak LertsiriyothinE3S Web Conf., 187 (2020) 04014DOI: https://doi.org/10.1051/e3sconf/202018704014