Some more explanation of segregated witness can be found here:

http://lists.linuxfoundation.org/pipermail/lightning-dev/2015-November/000326.html

http://gnusha.org/bitcoin-wizards/2015-11-19.log
http://gnusha.org/bitcoin-wizards/2015-11-08.log

http://diyhpl.us/wiki/transcripts/gmaxwell-sidechains-elements/
https://github.com/ElementsProject/elementsproject.github.io#segregated-witness
https://people.xiph.org/~greg/blockstream.gmaxwell.elements.talk.060815.pdf

https://github.com/ElementsProject/elements/commit/663e9bd32965008a43a08d1d26ea09cbb14e83aa

http://lists.linuxfoundation.org/pipermail/lightning-dev/2015-November/000322.html
http://lists.linuxfoundation.org/pipermail/lightning-dev/2015-November/000316.html
http://lists.linuxfoundation.org/pipermail/lightning-dev/2015-November/000310.html

Note that there are no backlinks to this thread (with the exception of a link I dropped in the -wizards logs), so please don't expect novel contributions placed here (if any) to be as easily found for individuals starting from those links rather than from this thread. Perhaps ping them if you do. Thanks.