1. M. J. Ablowitz, D. J. Kaup, A. C. Newell and H. Segur,The inverse scattering transform—Fourier analysis for nonlinear problems, Stud. Appl. Math.53 (1974), 249–315.
2. Transl. Math. Monographs;Ju. M. Berezanskii,1968
3. R. C. Cascaval, F. Gesztesy, H. Holden and Y. Latushkin, in preparation.
4. R. S. Chisholm and W. N. Everitt,On bounded integral operators in the space of integrable-square functions, Proc. Roy. Soc. Edinburgh Sect. A69 (1970/71), 199–204.
5. R. S. Chisholm, W. N. Everitt and L. L. Littlejohn,An integral operator inequality with applications, J. Inequal. Appl.3 (1999), 245–266.