Saeid Asghari,  Revolutionizing Product Packaging: The Impact of Transparent Graded Lanes on Ketchup and Edible Oil Containers on Consumer Behavior.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2024, vol. 207(3). 177 - 181
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10013572.