1. Ptosis;Beard,1969
2. Ophthalmic Plastic Surgery;Fox,1970
3. The anatomy of the upper lid and its relation to ptosis surgery;Jones;Am. J. Ophthalmol.,1964
4. The complications and results of ptosis surgery;Rycroft;Trans. Ophthalmol. Soc. U.K.,1967
5. The surgical treatment of blepharoptosis. A quantitative approach;Beard;Trans. Am. Ophthalmol. Soc.,1966