1. Filamentary keratitis;Beetham;Trans Am Ophthalmol Soc,1935
2. The osmolarity of tear microvolumes in normal eyes and keratoconjunctivitis sicca;Gilbard,1977
3. Intra-canalicular gelatin implants in the treatment of kerato-conjunctivitis sicca;Foulds;Br J Ophthalmol,1961
4. Tear volume in normal eyes and keratoconjunctivitis sicca;Scherz;Albrecht von Graefes Arch Klin Ophthalmol,1974
5. The punctum plug: Evaluation of a new treatment for the dry eye;Freeman;Trans Am Acad Ophthalmol Otolaryngol,1975