1. A. N. Babin, “The size and brightness of whiskers,” Bull. Crimean Astrophys. Observatory 58, 5–8 (1978).
2. O. E. Den, G. I. Kornienko, F. M. Makhmutov, and F. A. Mikhalina, “The structure of the chromosphere and radial velocities in the vicinity of “moustaches”,” Sol. Dannye, No. 11, 85–90 (1983).
3. A. N. Koval’, “On the motions related to moustaches,” Izv. Krym. Astrofiz. Obs. 32, 32–37 (1964).
4. M. N. Pasechnik, “Plasma motions in the solar loop of emerging magnetic flux,” Kinematics Phys. Celestial Bodies 30, 161–172 (2014).
5. S. B. Pikel’ner, “The nature of point-sources of lined, continuous and X-ray emission on the Sun,” Astron. Zh. 51, 233–242 (1974).