Er. Dearellano et Nl. Vasilevski, TOEPLITZ-OPERATORS ON THE FOCK SPACE WITH PRESYMBOLS DISCONTINUOUS ONA THICK SET, Mathematische Nachrichten, 180, 1996, pp. 299-315
Toeplitz operators with discontinuous presymbols on the Pock space are
studied. These presymbols can have two limit values at the points of
some subset in C-n, generally speaking of nonzero measure. Nevertheles
s the Toeplitz, operator algebra still admits a commutative symbolic c
alculus.