A novel method for rapid inspection of sewer networks: combining acoustic and optical means

H. Plihal, F. Kretschmer, M. T. Bin Ali, C. H. See, A. Romanova, K. V. Horoshenkov, Th. Ertl
2015 Urban Water Journal  
doi:10.1080/1573062x.2015.1076857 fatcat:aebscvs6fja6pdzreyhamnuzvy