http://lion.inchon.ac.kr/~schoi/m1.html
Much of this site is in Korean, however there are a couple of pages
containing a basic description, in English, of the relation between
electronic speckle pattern interferometry and holographic
interferometry; also a page on phase shifting interferometry.
http://www.ikb.mavt.ethz.ch/Bauweis/
University research projects using ESPI and shearography within a
Structures Technologies Centre. Includes typical optical set-up and
results.
http://www.hkbu.edu.hk/~ndssalab/html/intro.htm
An introduction to digital speckle pattern interferometry. Applications,
including sample results, to piezo-electric buzzer, high power ceramic
resistor, and surface mounting IC chip.