[Harut: https://userweb.jlab.org/~avakian/tmp/SIDIS-2015-12-9.pdf]
[Gagik: https://userweb.jlab.org/~avakian/tmp/TMD-proposal-gavalian.pdf]
[Bowen: https://userweb.jlab.org/~avakian/tmp/main-bowen.pdf]