1. E. Wolf, “new theory of partial coherence in the space-frequency domain. Part I: spectra and cross spectra of steady-state sources,” J. Opt. Soc. Am. 72, 343–351 (1982)
2. Die Wahrscheinliche Schwingungsverteilung in Einer von Einer Lichtquelle Direkt Oder Mittels Einer Linse Beleuchteten Ebene
3. The concept of degree of coherence and its application to optical problems
4. M. Born and E. Wolf, Principles of Optics, 7th edition, Cambridge University, (1985).
5. J. W. Goodman, Statistical Optics, Wiley Classics Library Edition, (2000).