Anastasia Rita Widiarti, Comparing Hilditch, Rosenfeld, Zhang-Suen,and Nagendraprasad -Wang-Gupta Thinning. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. June 2011, vol. 54(6). 563 - 567 [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/6492.