Analytical insight to explore the behavior of neem gum modified NHL 3.5 mortarDurgadevagi Shanmugavel, Mohamed Amine Khadimallah and Ravi RamadossEur. Phys. J. Plus, 137 7 (2022) 775DOI: https://doi.org/10.1140/epjp/s13360-022-02985-0