Shuib Rambat and  Ruzsyahriman Jenal and  John Elgy,  Indoor Mapping by using Smartphone Device.   journal   = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2012, vol. 63(3). 347 - 349
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/586.