Follow
$C^*$-correspondence functoriality of Cuntz-Pimsner algebras. (arXiv:2009.08488v1 [math.OA]) http://arxiv.org/abs/2009.08488
$C^*$-correspondence functoriality of Cuntz-Pimsner algebras. (arXiv:2009.08488v1 [math.OA]) http://arxiv.org/abs/2009.08488