WASET
    Rado Flajs and  Miran Saje,  Note on the Necessity of the Patch Test.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2012, vol. 69(9). 713 - 716
    [viewed 29 March 2024]. Available from: https://publications.waset.org/pdf/14007.