Validation process for users' requirements in air traffic operations / 
Vaporeto ; CAA/NATS (UK) ... [et al.]. 
 - Luxembourg :  Office for Official Publications of the European Communities ,  c1997. 
 - iv, 52 p. ;  25 cm. 
 - Transport research ;  44 .
<br/><br/> European Commission, Directorate-General Transport"--Cover. 
<br/><br/>References: p.45-47 
<br/><br/><label>ISBN: </label>9282799751 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Air traffic control--Evaluation.--European Union countries
<br/><br/><label>Dewey Class. No.: </label>629.1366094