A1 publication Journal title Physical Review Letters Publication date November 1998 Volume, issue & page range or art. n 81, (12), 2562-2565. Year 1998 Authors Demuynck S.; Meersschaut J.; Dekoster J.; Swinnen B.; Moons R.; Vantomme A.; Cottenier S.; Rots M. DOI http://dx.doi.org/10.1103/PhysRevLett.81.2562