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The stronger incentives to maximize productivity that he conceives as possible in a socialist economy based on cooperative and self-managed enterprises might be accomplished in a free-market economy if employee-owned companies were the norm as envisioned by various thinkers including Louis O. Kelso and James S. Albus .
 person: Louis O. Kelso; person: James S. Albus
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 person: Louis O. Kelso; person: James S. Albus