“…Softwares like Pajek (Batagelj and Mrvar, 1998), UCINET (Borgatti et al, 2002), SCI 2 (Sci 2 , 2009) and NodeXL (Smith et al, 2009) have an inbuilt network drawing function. These softwares have been extensively used in several co-author network studies (Gonzalez- Alcaide et al, 2010;Graeml et al, 2010;Olmeda-Gomez et al, 2008;Velden et al, 2010). Network drawing can be improved for better visibility using spring algorithms, such as Kamada-Kawai (Olmeda-Gomez et al, 2008;Ovalle-Perandones et al, 2009), Fruchterman-Reingold (Fruchterman et al, 1991) and Harel-Koren Fast multiscale (Koren and Harel, 2004), among others.…”