O'Shea, J.B. <br/><br/>
application of the theory of queues to the forecasting of s-hovel-truck fleet productions / by J.B. O'Shea, G.N. Slutki-n and L.R. Shaffer 

 - Urbana, Illinois : University of Illinois, Department of Civil Engineering 
 - 172 p. 
 - Civil engineering studies. Construction research series ; N- o. 3 .