 
                                                                                | Article ID: | iaor1990560 | 
| Country: | United Kingdom | 
| Volume: | 17 | 
| Start Page Number: | 1 | 
| End Page Number: | 7 | 
| Publication Date: | Apr 1990 | 
| Journal: | Computers and Operations Research | 
| Authors: | Cheng T.C.E. . | 
In many single-machine sequencing problems the optimal job sequence is shown to be in the shortest processing time (SPT) order. This note offers a constructive proof of SPT optimality for these problems via solution of the transportation problem.