Collisional-radiative model including recombination processes for W27+ ion Izumi Murakami, Akira Sasaki, Daiji Kato and Fumihiro Koike Eur. Phys. J. D, 71 10 (2017) 246 Published online: 10 October 2017 DOI: 10.1140/epjd/e2017-80099-4