Jan Hartmann Alistair G. Sutcliffe Antonella De Angeli Towards a theory of user judgment of aesthetics and user interface quality. 2008 15 ACM Trans. Comput.-Hum. Interact. 3 http://doi.acm.org/10.1145/1460355.1460357 db/journals/tochi/tochi15.html#HartmannSA08