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Milanic, Martin 
ORCID: 0000-0002-8222-8097, Oversberg, Andrea and Schaudt, Oliver
(2014).
A characterization of line graphs that are squares of graphs.
Discret Appl. Math., 173.
S. 83 - 92.
AMSTERDAM:
ELSEVIER SCIENCE BV.
ISSN 1872-6771