no. 1
Differential algebra in a topos
Cahiers de topologie et géométrie différentielle, Tome 22 (1981) no. 1, pp. 45-51. 
@article{CTGDC_1981__22_1_45_0,
     author = {Keigher, William F.},
     title = {Differential algebra in a topos},
     journal = {Cahiers de topologie et g\'eom\'etrie diff\'erentielle},
     pages = {45--51},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {22},
     number = {1},
     year = {1981},
     mrnumber = {609158},
     zbl = {0459.18004},
     language = {en},
     url = {http://archive.numdam.org/item/CTGDC_1981__22_1_45_0/}
}
TY  - JOUR
AU  - Keigher, William F.
TI  - Differential algebra in a topos
JO  - Cahiers de topologie et géométrie différentielle
PY  - 1981
SP  - 45
EP  - 51
VL  - 22
IS  - 1
PB  - Dunod éditeur, publié avec le concours du CNRS
UR  - http://archive.numdam.org/item/CTGDC_1981__22_1_45_0/
LA  - en
ID  - CTGDC_1981__22_1_45_0
ER  - 
%0 Journal Article
%A Keigher, William F.
%T Differential algebra in a topos
%J Cahiers de topologie et géométrie différentielle
%D 1981
%P 45-51
%V 22
%N 1
%I Dunod éditeur, publié avec le concours du CNRS
%U http://archive.numdam.org/item/CTGDC_1981__22_1_45_0/
%G en
%F CTGDC_1981__22_1_45_0
Keigher, William F. Differential algebra in a topos. Cahiers de topologie et géométrie différentielle, Tome 22 (1981) no. 1, pp. 45-51. http://archive.numdam.org/item/CTGDC_1981__22_1_45_0/

1 P.T. Johnstone, Topos Theory, Academic Press, London, 1977. | MR | Zbl

2 W.F. Keigher, Adjunctions and comonads in differential algebra, Pacific J. Math, 59 (1975), 99 - 112. | MR | Zbl

3 W.F. Keigher, Symmetric monoidal comonads and differential algebra, Comm. in Algebra 7 ( 2) (1979), 139- 162. | MR | Zbl

4 M. Tierney, On the spectrum of a ringed topos, in: Algebra, Topology and Category Theory: A Collection of papers in honor of Samuel Eilenberg (A. Heller and M. Tierney, Eds. ), Academic Press, New York, 1976, pp. 189-210. | MR | Zbl

5 G. Wraith, Algebraic theories, Lecture Notes series n° 22, Mat. Inst. Aarhus Univ. 1970. | MR | Zbl