* Writings
  * Software Design December issue published on 18th November
    * http://gihyo.jp/magazine/SD/archive/2013/201312
    * Takashi Sakamoto wrote an article: The sound subsystem of Linux and HDA
  * Ubuntu Weekly Topcis
   * http://gihyo.jp/admin/clip/01/ubuntu-topics/201311/01
   * http://gihyo.jp/admin/clip/01/ubuntu-topics/201311/08
   * http://gihyo.jp/admin/clip/01/ubuntu-topics/201311/15
   * http://gihyo.jp/admin/clip/01/ubuntu-topics/201311/22
   * http://gihyo.jp/admin/clip/01/ubuntu-topics/201311/29
  * Ubuntu Weekly Recipe
   * http://gihyo.jp/admin/serial/01/ubuntu-recipe/0297
   * http://gihyo.jp/admin/serial/01/ubuntu-recipe/0298
   * http://gihyo.jp/admin/serial/01/ubuntu-recipe/0299
   * http://gihyo.jp/admin/serial/01/ubuntu-recipe/0300