1. Alling N (1987) Foundations of analysis over surreal number fields. North-Holland, Amsterdam
2. Alling N, Ehrlich P (1986) An alternative construction of Conway’s surreal numbers. C R Math Acad Sci Soc R Can VIII:241–246
3. Alling N, Ehrlich P (1987) Sections 4.02 and 4.03 of Alling (1987)
4. Artin E, Schreier O (1926) Algebraische Konstruktion reeller Körper. Abh Math Semin Univ Hambg 5:85-99. English translation: Algebraic construction of real fields. In: Rosen MR
5. (ed) (2007) Exposition by Emil Artin: a selection. American Mathematical Society and London Mathematical Society, Providence, pp 273-283