Philips research reports 

 - EINDHOVEN :  N. V. PHILIPS' GLOEILAMPENFABRIEKEN, 
 - Bimestral 
<br/><br/><label>ISSN: </label>0031-7918 
 = Philips research reports 
 = PHILIPS RES. REP. 
<br/><br/><label>Subjects--Index Terms: </label>INGENIERIA ELECTRICA;  INGENIERIA  MECANICA