1. Ectasia transitoire au cours du keratocone;Terrien;Arch. d'Opht.,1906
2. Complication of keratoconus by acute transitory ectasia;Rabinovitch;Vestnik Ophth., Moskow,1908
3. Case of ectasia following conical cornea. Excision of elliptical portion;Cooke;Trans. Ophth. Soc. U. Kingdom,1911
4. Case of conical cornea assuming malignant course;Reid;Trans. Ophth. Soc. U. Kingdom,1924