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		| Ngo Van  Long and Frank  Stähler | 
	
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		| ''The economics of production planning'' | 
	
		| ( 2018, Vol. 38 No.2 ) | 
	
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		| This note scrutinizes the role of share parameters in CES production functions. It shows that a firm, when planning production or selecting a production process, aims at maximizing one share parameter at the expense of another in a CES environment. Interior solutions can exist only if factor prices are uncertain to begin with. | 
	
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		| Keywords: Production plan,  production functions,  CES,  Cobb-Douglas | 
	
		| JEL: D2 - Production and Organizations: General D8 - Information, Knowledge, and Uncertainty: General
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		| | Manuscript Received : Feb 05 2018 |  | Manuscript Accepted : Apr 15 2018 | 
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