In the original language
Low-mass stars belong to the most numerous component of our Galaxy. We present the new results of our long-term observational project to detect small variations in the orbital periods of low-mass and short-period eclipsing binaries. Three known systems, namely V1828 Aql, NSVS 2676703, NSVS 6507557, and their period changes visible in the current O-C diagrams, are briefly discussed.