Strasser, H <br/><br/>
Evaluation of a supermarket twin-checkout involving forward and backward operation.  [electronic resource] 

 -  Applied ergonomics  Mar 1990 
 - 7-14 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0003-6870 
<br/><br/><label>Standard No.: </label>10.1016/0003-6870(90)90068-9  doi