By A Mystery Man Writer
Brazil 2014: Can the Brazuca pump up the deflated World Cup football?
From the Tango to the Brazuca via the Jabulani: A brief history of the World Cup ball, The Independent
Brazil's World Cup Attendees Are Banned From Using Caxirola - WSJ
World Cup 2014: Caxirolas are the new vuvuzelas but are they even more annoying?
Quiz: how well do you know your World Cup balls?, World Cup 2018
World Cup Caxirolas: The Newer, Better, Banned Vuvuzelas
The World Cup caxirola deserved to be banned. It's got nothing on the vuvuzela, Megan Carpentier
World Cup Caxirolas: The Newer, Better, Banned Vuvuzelas
Brazil 2014: Can the Brazuca pump up the deflated World Cup football?
World Cup 2014: Caxirolas are the new vuvuzelas but are they even more annoying?
Soccer