Kulakova, E;    Khalighinejad, N;    Haggard, P;      (2017)    I could have done otherwise: Availability of counterfactual comparisons informs the sense of agency.                   Consciousness and Cognition , 49    pp. 237-244.    10.1016/j.concog.2017.01.013 <https://doi.org/10.1016/j.concog.2017.01.013>.       Green open access