RETRACTED: Brain Tumors Classification System Using Convolutional Recurrent Neural NetworkV. Akila, P.K. Abhilash, P Bala Venakata Satya Phanindra, J Pavan Kumar and A. KavithaE3S Web Conf., 309 (2021) 01075DOI: https://doi.org/10.1051/e3sconf/202130901075