Moohyun Lee and  Soojung Hur and  Yongwan Park,  Obstacle Classification Method Based On 2D LIDAR Database.   journal   = {International Journal of Mechanical and Mechatronics Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2014, vol. 92(8). 1442 - 1446
    [viewed 18 September 2020]. Available from: https://publications.waset.org/pdf/9999089.