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A dominant subset of V-shaped sequences for a class of single machine sequencing problems
Al-Turki, Umar M., (1996)
V- and GG-shaped properties for optimal single machine schedules for a class of non-separable penalty functions
Mittenthal, John, (1995)
A constructive method to recognize the total unimodularity of a matrix
Raghavachari, M., (1976)