1. Linear functions on the N-dimensional unit cube;Babat;Soviet Math. Dokl,1975
2. Approximation algorithms for some scheduling problems;Gens;Engeneering Cybernetics,1978
3. Computational complexity of approximation algorithms for combinatorial problems;Gens,1979
4. Fast approximation algorithms for knapsack type problem;Gens,1980
5. Fast approximation algorithms for the knapsack and sum of subset problems;Ibarra;J. Assoc. Comput. Mach,1975