1. Berenstein, A.: Group-like elements in quantum groups and Feigin’s conjecture (1996).
arXiv:q-alg/9605016
2. Berenstein, A., Fomin, S., Zelevinsky, A.: Parametrizations of canonical bases and totally positive matrices. Adv. Math. 122(1), 49–149 (1996)
3. Berenstein, A., Zelevinsky, A.: String bases for quantum groups of type
$$A_r$$
A
r
. Adv. Soviet Math. 16(1), 51–89 (1993)
4. Berenstein, A., Zelevinsky, A.: Quantum cluster algebras. Adv. Math. 195(2), 405–455 (2005)
5. Braverman, A., Finkelberg, M., Nakajima, H.: Towards a mathematical definition of Coulomb branches of 3-dimensional
$$\cal{N}= 4$$
N
=
4
gauge theories, II.
arXiv:1601.03586
(2016)