M. Tismenetsky
International Journal of Computer Mathematics
An arbitrary Riemann surface with signature can be represented as the quotient of a simply connected Riemann surface by a properly discontinuous group of conformai mappings with the natural projection satisfying some conditions. The representation is unique up to conjugation. © 1971 American Mathematical Society.
M. Tismenetsky
International Journal of Computer Mathematics
Andrew Skumanich
SPIE Optics Quebec 1993
T. Graham, A. Afzali, et al.
Microlithography 2000
Chai Wah Wu
Linear Algebra and Its Applications