1. Aime, G, Kadiri, S., Martin, F., Petrov, R., and Ricord, R.: 1984, “Measurements of submilliarcsecond speckle displacements using a cross-spectrum analysis technique: test on atmospheric dispersion”, Astron. Astrophys., 134, pp. 354–359
2. Aime, G, Borgnino, J., Lund, G. and Ricord, G.: 1988, “Tetrapus: non diffraction limited resolution using chromatic position differences measurements”, Proceedings of the NOAO-ESO conference on High-resolution imaging by interferometry, Garching F.R.G. 15–18 March, pp. 249–256
3. Beckers, J.M.: 1982, “Differential speckle interferometry”, Opt. Acta, 29, pp.361–362
4. Proceedings of the IAU colloquium;JM Beckers,1982
5. Borgnino, J., Aime, G, Lazrek, M., Martin, F., Petrov, R.G. and Ricord, G.: 1989 “Polychromatic transfer functions in stellar speckle interferometry”, to appear in J. Opt. Soc. Am., 29 p.