Paul Blenkhorn David Gareth Evans Alasdair King Sri Hastuti Kurniawan Alistair G. Sutcliffe Screen Magnifiers: Evolution and Evaluation. 54-61 2003 23 IEEE Computer Graphics and Applications 5 http://doi.ieeecomputersociety.org/10.1109/MCG.2003.1231178 db/journals/cga/cga23.html#BlenkhornEKKS03