Venkatavasu Bokka Himabindu Gurla Stephan Olariu James L. Schwing Larry Wilson Time-optimal ranking algorithms on sorted matrices. 42-53 1995 conf/asap/1995 ASAP http://doi.ieeecomputersociety.org/10.1109/ASAP.1995.522904 db/conf/asap/asap1995.html#BokkaGOSW95