1. Ehgamberdiev, S. and Khamitov, I., 1991, On the calculation of spurious velocity signal produced by atmospheric differential extinction in whole-disk oscillation measurements, Euclidis Opera Omnia, ed. I.L. Heiberg & H. Menge, Lipsiae, in aed. Teubner.: I. Elementa i-iv(1883)
2. Fossat, E., 1991, The IRIS network for full disk helioseismology: Present status of the programme. Solar Physics,133, 1–12.
3. Fossat, E., Régulo, C, Roca Cortés T., Ehgamberdiev, S., Gelly, B., Grec G., Khalikov, S., Khamitov, I., Lazrek, M., Pallé, P.L. and Sanchez Duarte, L., 1992, On the acoustic cut-off frequency of the Sun, Astron. Astrophys.266, 532–536.
4. Grec, G., Fossat, E., 1979, Calculation of pseudo solar narrow band oscillation produced by atmospheric differential extinction. Astronomy and Astrophysics,77, 351–353.
5. Grec, G., Fossat, E., Gelly, B.and Schmider, F.X., 1991, The IRIS sodium cell instrument, Solar Physics,l33,13–30.