Bibliography

1

P. K. Draxl, Skew fields (London mathematical society lecture note series, Cambridge Univ. press, 1983.

2

D. Mumford, Tata lectures on theta II, Birkhauser, 1984.

3

M. Nagata, Field theory, Marcel Dekker, 1977.

Kochi University

Department of Mathematics

Faculty of Science

Kochi, 780 Japan

E-mail: docky@math.kochi-u.ac.jp