TY - GEN AU - Abd El-Bar,S E AU - Abd El-Salam,F A TI - Photogravitational perturbations in the infinitesimal orbits around the libration points in the oblate RTBP SN - 1551-0018 PY - 2020///0228 N1 - Publication Type: Journal Article UR - https://doi.org/10.3934/mbe.2019411 ER -