Bilateral penetrating keratoplasty – indications, results and review of literature - Rao, Srinivas K.; Sudhir, R. R.; Fogla, Rajesh; Rajagopal, Rama; Sitalakshmi, G.; Padmanabhan, Prema (Springer, 1999)
http://dx.doi.org/10.1023/A:1010635231828
Keywords: WW-YZ