Time fractional third-order variant Boussinesq system: Symmetry analysis, explicit solutions, conservation laws and numerical approximationsFairouz Tchier, Mustafa Inc, Abdullahi Yusuf, Aliyu Isa Aliyu and Dumitru BaleanuEur. Phys. J. Plus, 133 6 (2018) 240DOI: https://doi.org/10.1140/epjp/i2018-12068-0