1. Ahern, P., Youssfi, E. H., Zhu, K.: Compactness of Hankel operators on Hardy–Sobolov spaces of the polydisk. J. Operator Theory, 61(2), 301–312 (2009)
2. Al-Homidan, S.: Solving Hankel matrix approximation problem using semidefinite programming. J. Comput. Appl. Math., 202(2), 304–314 (2007)
3. Arora, S. C., Batra, R., Singh, M. P.: Slant Hankel operators. Arch. Math. (Brno), 42, 125–133 (2006)
4. Athale, R. A., Szu, H. H., Lee J. N.: Three methods for performing Hankel transforms. NASA Langley Research Center Opt. Inform. Process. for Aerospace Appl., subject category (optics) (1981) (available on NTRS - NASA Technical Reports Server)
5. Avendaño, R. A. M.: A generalization of Hankel operators. J. Funct. Anal., 190(2), 418–446 (2002)