  We study the correlation functions of the Pfaffian Schur process. Borodin and
Rains [J. Stat. Phys. 121 (2005), 291-317] introduced the Pfaffian Schur
process and derived its correlation functions using a Pfaffian analogue of the
Eynard-Mehta theorem. We present here an alternative derivation of the
correlation functions using Macdonald difference operators.
