Daedal is distributed under a dual license: open source and custom. The open source license is the same as the ArgoDSM license.
To properly cite Daedal, please use:
Konstantinos Koukos, Per Ekemark, Georgios Zacharopoulos, Vasileios Spiliopoulos, Stefanos Kaxiras, Alexandra Jimborean, Multiversioned decoupled access-execute: the key to energy-efficient compilation of general-purpose programs. Compiler Construction, March 17-18, 2016: 121-131