1846 paper by Eisenstein, later the same year Richelot uses the term Normalform in a paper, and in 1851 Sylvester writes: "I now proceed to [...] the...

Stuttgart: B. G. Teubner. ISBN 978-3-519-02123-0. Section 6.2 "Die Chomsky-Normalform für kontextfreie Grammatiken", p. 149–152 Lange, Martin; Leiß, Hans (2009)...

2 = d {\displaystyle \;h(x,y)={\frac {x+y-1}{\sqrt {2}}}=d\;} (Hesse normalform) Circle f ( x , y ) = x 2 + y 2 − 1 = 0 {\displaystyle \;f(x,y)=x^{2}+y^{2}-1=0\;}...

Börgers, T. (1 February 1991). "Undominated strategies and coordination in normalform games". Social Choice and Welfare. 8 (1): 65–78. doi:10.1007/BF00182448...