Recommended Citation
Published in Proceedings of the American Mathematical Society, Volume 105, Issue 1, January 1, 1989, pages 262-.
NOTE: At the time of publication, the author Todor D. Todorov was not yet affiliated with Cal Poly.
Disciplines
Mathematics
Copyright
Publisher statement
This article was first published in Proceedings of the American Mathematical Society, published by the American Mathematical Society.
URL: https://digitalcommons.calpoly.edu/math_fac/72
