Naveed Ahmed and  Gunar Matthies,  Numerical Studies of Galerkin-type Time-discretizations Applied to Transient Convection-diffusion-reaction Equations.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    June 2012, vol. 66(6). 644 - 651
    [viewed 11 August 2020]. Available from: https://publications.waset.org/pdf/1200.