[[http://cms.unige.ch/math/tggroup/lib/exe/fetch.php?media=wiki:20141126_131648.jpg|Picture 1]] [[http://cms.unige.ch/math/tggroup/lib/exe/fetch.php?media=wiki:20141126_131709.jpg|Picture 2]] [[http://cms.unige.ch/math/tggroup/lib/exe/fetch.php?media=wiki:20141126_131038.jpg|Picture 3]] [[http://cms.unige.ch/math/tggroup/lib/exe/fetch.php?media=wiki:20141126_131056.jpg|Picture 4]] [[http://cms.unige.ch/math/tggroup/lib/exe/fetch.php?media=wiki:20141126_131213.jpg|Picture 5]] [[http://cms.unige.ch/math/tggroup/lib/exe/fetch.php?media=wiki:20141127_150457.jpg|Picture 6]]