Shingledecker, C A <br/><br/>
Risk and effort measures of fatigue.  [electronic resource] 

 -  Journal of motor behavior  Mar 1974 
 - 17-25 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0022-2895 
<br/><br/><label>Standard No.: </label>10.1080/00222895.1974.10734975  doi