Filters Derived from the Addtion or Subtraction of Two m-D All-Pass Filters.

Venkat Ramachandran Majid Ahmadi Christian S. Gargour Filters Derived from the Addtion or Subtraction of Two m-D All-Pass Filters. 269-272 1994 ISCAS db/conf/iscas/iscas1994-2.html#RamachandranAG94