another researches

realtime.wsj.com/korea/2012/03/05/홈팀-어드밴티지의-미스테리/

en.wikipedia.org/wiki/Home_advantage

www.nfl.com/features/freakonomics/episode-7

Some researches

Home sweet home?
http://www.theguardian.com/sport/2008/feb/03/features.sportmonthly16

Why do home teams win?
http://www.significancemagazine.org/details/webexclusive/999747/Why-do-home-teams-win.html

How advantageous is home-field advantage? And why?
http://freakonomics.com/2011/12/18/football-freakonomics-how-advantageous-is-home-field-advantage-and-why/