1. Lacrimal drainage surgery;Quickert,1976
2. Intubation of obstructions in the lacrimal system;Crawford;Can. J. Ophthalmol,1977
3. Silicone tube intubation of the lacrimal drainage system;Pashby;Arch. Ophthalmol,1979
4. Intubation of the lacrimal passages;Keith;Am. J. Ophthalmol,1968
5. Silicone intubation in children with nasolacrimal obstruction;Durso;J. Pediatr. Ophthalmol. Strabismus,1980