TY - JOUR AU - Ashish Kumar Prasad AU - Anant Pratap Singh AU - Sony Khatri TI - Duality for a Class of Second Order Symmetric Nondifferentiable Fractional Variational Problems JO - Yugoslav journal of operations research PY - 2020 SP - 121 VL - 30 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/YJOR_2020_30_2_a0/ LA - en ID - YJOR_2020_30_2_a0 ER -