1. Calculating bounds on certain measures of network reliability;Ball,1981
2. On the inherent intractability of certain coding problems;Berlekamp;IEEE Trans. Inform. Theory,1978
3. Optimal tile salvage;Berman,1982
4. Dominating sets in chordal graphs;Booth;SIAM J. Comput.,1982
5. S. Burr, private communication, 1982.