Invariant length of a cosmic string.  [electronic resource] 

 -  Physical review. D, Particles and fields  Jun 1990 
 - 3612-3619 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0556-2821 
<br/><br/><label>Standard No.: </label>10.1103/physrevd.41.3612  doi