M. Znojil
New types of solvability
in PT symmetric quantum theory,
in "Superintegrability in Classical and Quantum Systems",
Ed.
P.Tempesta, P. Winternitz, J. Harnad, W. Miller, Jr., G. Pogosyan
and M. Rodriguez,
CRM
Proceedings et Lecture Notes 37,
AMS,
Providence, 2004, pp. 333-347
(math-ph/0501058,
invited talk for
Workshop on Superintegrability in Classical and Quantum Systems
September 16-21,
2002,
Montreal,
Canada).