International Congress on Differential Geometry Bilbao, Spain, Gray, A., Fernandez, M., & Wolf, J. A. (2001). Global differential geometry: The mathematical legacy of Alfred Gray : International Congress on Differential Geometry September 18-23, 2000, Bilbao, Spain. American Mathematical Society.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Congress on Differential Geometry Bilbao, Spain, Alfred Gray, Marisa Fernandez, και Joseph Albert Wolf. Global Differential Geometry: The Mathematical Legacy of Alfred Gray : International Congress on Differential Geometry September 18-23, 2000, Bilbao, Spain. Providence, R.I.: American Mathematical Society, 2001.
Παραπομπή σε μορφή MLA (9th εκδ.)International Congress on Differential Geometry Bilbao, Spain, et al. Global Differential Geometry: The Mathematical Legacy of Alfred Gray : International Congress on Differential Geometry September 18-23, 2000, Bilbao, Spain. American Mathematical Society, 2001.