S. M. Sitnik, E. L. Shishkina, “O dvukh klassakh operatorov obobschennogo drobnogo integro-differentsirovaniya”, Differentsialnye uravneniya i matematicheskaya fizika, Itogi nauki i tekhn. Sovrem. mat. i ee pril. Temat. obz., 198, VINITI RAN, M., 2021, 109–122
E. L. Shishkina, Trends in Mathematics, Transmutation Operators and Applications, 2020, 237
Elina Shishkina, Sergei Sitnik, Transmutations, Singular and Fractional Differential Equations with Applications to Mathematical Physics, 2020, 433
Transmutations, Singular and Fractional Differential Equations with Applications to Mathematical Physics, 2020, 527
E. L. Shishkina, “Obschee uravnenie Eilera—Puassona—Darbu i giperbolicheskie $B$-potentsialy”, Uravneniya v chastnykh proizvodnykh, SMFN, 65, no. 2, Rossiiskii universitet druzhby narodov, M., 2019, 157–338
S. M. Sitnik, E. L. Shishkina, “O drobnykh stepenyakh operatora Besselya na poluosi”, Sib. elektron. matem. izv., 15 (2018), 1–10
Elina L. Shishkina, “Generalized Euler–Poisson–Darboux equation and singular Klein–Gordon equation”, J. Phys.: Conf. Ser., 973 (2018), 012058
E. L. Shishkina, “Vesovye obobschennye funktsii, otvechayuschie kvadratichnoi forme s kompleksnymi koeffitsientami”, Chelyab. fiz.-matem. zhurn., 2:1 (2017), 88–98