Gray, J. (2000). Linear differential equations and group theory from Riemann to Poincare.- 2nd ed. (2nd ed.). Birkhauser.
Chicago-стиль цитированияGray, Jeremy. Linear Differential Equations and Group Theory from Riemann to Poincare.- 2nd Ed. 2nd ed. Boston: Birkhauser, 2000.
MLA-цитированиеGray, Jeremy. Linear Differential Equations and Group Theory from Riemann to Poincare.- 2nd Ed. 2nd ed. Birkhauser, 2000.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.