Vinay Chandwani and  Vinay Agrawal and  Ravindra Nagar,  Modeling and Analysis of Concrete Slump Using Hybrid Artificial Neural Networks.   journal   = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology.
    September 2014, vol. 93(9). 987 - 994
    [viewed 18 November 2019]. Available from: https://publications.waset.org/pdf/9999439.