P. Anuradha Kameswari and L. Jyotsna, “Cryptanalysis of RSA with Small Multiplicative Inverse of $\varphi(N)$ Modulo $e$ and with a Composed Prime Sum $p+q$”, Int. J. Math. And Appl., vol. 6, no. 1 - C, pp. 515–526, Feb. 2018.