I am currently working on grad school applications to US Universities. Somewhere in my statement of purpose, I express my interest in working in a certain field. As a reason for that interest, I want to cite a particular paper written by members of the CS Department at the University of Toronto. The problem targeted by that paper was one that I was very interested in (at an abstract level) when I was in high school. Thus I got deeply excited and would like to extend their work.
Is it okay if I mention this paper in my statement of purpose for schools other than the University of Toronto? Could such a reference give the (mistaken) impression that I had written a statement of purpose specifically for the University of Toronto and then didn't bother to make changes for other schools?