"Only a few years back the Scandinavian was not fully accepted as an accurate reply to 1 e4, and only a small number of grandmasters occasionally employed it. However, in the current Wijk aan Zee tournament, the Melts Variation with 3….Qd6 was used by both Tiviakov and Ivanchuk. Even more noteworthy is the fact that Kramnik used it as his main weapon against 1 e4 during the Tal Memorial blitz tournament in Moscow last year. Thus, the Scandinavian Defense has never been as popular as it is right now." - FM Carsten Hansen (2010)
Starting Out: The Scandinavian by Jovanka Houska (2009)
https://web.archive.org/web/20140627002658/http://www.chesscafe.com/text/hansen129.pdf
Play the Scandinavian by Christian Bauer (2010)
https://web.archive.org/web/20140627073000/http://www.chesscafe.com/text/hansen142.pdf
The Scandinavian: Move by Move by Cyrus Lakdawala (2013)
https://web.archive.org/web/20140626232217/http://www.chesscafe.com/text/hansen171.pdf
Smerdon’s Scandinavian by David Smerdon (2015)
Hi.
I am playing 10' games and the Scandinavian Defense is appearing a lot. I'd say that about half of the players go Scandinavian as soon as I play e4. Usually black gets into trouble quite fast. I am puzzled. Has the Scandinavian Defense become fashionable? If so, why?