Marsakova, V. I.Andronov, Ivan L.2014-03-162014-03-162012Odessa Astronomical Publicationshttps://dspace.onu.edu.ua/handle/123456789/4662Odessa Astronomical publications / Одесская астроном. обсерватория . – Одесса : Астропринт, 2012 . – Vol.25/1.The variability of several stars shows “Mira-type” and “semiregular” behavior during long-time data ranges. Such data are available due to amateur visual observations from AAVSO and AFOEV databases. We have studied these properties by using different methods of timeseries analysis, such as the periodogram analysis using trigonometric polynomial fit, wavelet analysis and individual cycle characteristics analysis using the running parabola fit. As the result, very similar multiperiodicities were detected.enStars: LPVsMira-typesemiregularindividual: S Aql, S Tri, Y PerArticle