Rw. Koenker et Pt. Ng, A REMARK ON BARTELS AND CONNS LINEARLY CONSTRAINED, DISCRETE L(1) PROBLEMS, ACM transactions on mathematical software, 22(4), 1996, pp. 493-495
Two modifications of Bartels and Conn's algorithm for solving linearly
constrained discrete I-1 problems are described. The modifications ar
e designed to improve performance of the algorithm under conditions of
degeneracy.