1. Bahouri, H., Chemin, J.Y., Danchin, R.: Fourier Analysis and Nonlinear Partial Differential Equations, Grundlehren der Mathematischen Wissenschaften [Fundamental Principles of Mathematical Sciences], vol. 343. Springer, Heidelberg (2011)
2. Bellazzini, J., Georgiev, V., Visciglia, N.: Long time dynamics for semirelativistic NLS and half wave in arbitrary dimension. Math. Ann. 371(1–2), 707–740 (2018)
3. Bergh, J., Löfström, J.: Interpolation Spaces: An Introduction. Springer, Berlin (1976). Grundlehren der Mathematischen Wissenschaften, No. 223
4. Choffrut, A., Pocovnicu, O.: Ill-posedness of the cubic nonlinear half-wave equation and other fractional NLS on the real line. Int. Math. Res. Not. IMRN 2018(3), 699–738 (2018)
5. Christ, M., Colliander, J., Tao, T.: Ill-posedness for nonlinear Schrodinger and wave equations. Preprint,
arXiv:math.AP/0311048