1. Discrete-variable extremum problems;Dantzig, George B.;Operations Res.,1957
2. Solution of a large-scale traveling-salesman problem;Dantzig, G.;J. Operations Res. Soc. Amer.,1954
3. On the solution of discrete programming problems;Markowitz, Harry M.;Econometrica,1957
4. 4. Stuart E. Dreyfus, A comparison of linear programming and dynamic programming, Rand Report P-885, June, 1956.