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.