A non-invasive fluorescent staining procedure allows Confocal Laser Scanning Microscopy based imaging of Mycobacterium in multispecies biofilms colonizing and degrading polycyclic aromatic hydrocarbons., Wouters, K, Maes E, Spitz J-A, Roeffaers M B. J., Wattiau P, Hofkens J, and Springael D , J Microbiol Methods, 2010 Dec, Volume 83, Issue 3, p.317-25, (2010)