TY - JOUR AU - Bahram Agheli TI - Approximate Solution of Bratu Differential Equations Using Trigonometric Basic Functions JO - Kragujevac Journal of Mathematics PY - 2021 SP - 203 VL - 45 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/KJM_2021_45_2_a3/ LA - en ID - KJM_2021_45_2_a3 ER -