60a1537d4d berlleelv
https://colab.research.google.....com/drive/1gNih9eWNL
https://colab.research.google.....com/drive/1RftfluFrQ
https://colab.research.google.....com/drive/1sfqo3uTpA
https://colab.research.google.....com/drive/1W4N-562O4
https://colab.research.google.....com/drive/1VK8LLg195
http://www.almguide.com/2015/0....3/video-git-and-visu