1. G. Andrews, On the existence of solutions to the equation utt = uxxt+σ(ux)x, J. Differential Equations, 35 (1980), pp. 200–231.
2. S. Antontsev and S. Shmarev, Evolution PDEs with nonstandard growth conditions: Existence, uniqueness, localization, blow-up, vol. 4 of Atlantis Studies in Differential Equations, Atlantis Press, Paris, 2015.
3. S. Antontsev, S. Shmarev, J. Simsen, and M. S. Simsen, On the evolution p-Laplacian with nonlocal memory, Nonlinear Anal., 134 (2016), pp. 31–54.
4. S. N. Antontsev, J. I. Díaz, and S. Shmarev, Energy methods for free boundary problems, Progress in Nonlinear Differential Equations and their Applications, 48, Birkhäuser Boston, Inc., Boston, MA, 2002. Applications to nonlinear PDEs and fluid mechanics.
5. V. Barbu, Integro-differential equations in Hilbert spaces, An. Şti. Univ. “Al. I. Cuza” Iaşi Secţ. I a Mat. (N.S.), 19 (1973), pp. 365–383.