28878
The term was first used in 1958 by professor Jack Rogers of Berkeley , who extended the economic order quantity model to the case where there are several products to be produced on the same machine , so that one must decide both the lot size for each product and when each lot should be produced .
 Jack Rogers
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Jack Rogers