Statistical analysis of period-eccentricity distribution for large samples of close binaries from Kepler, CoRoT and SB9 databasesJ. Sztakovics, E. Forgács-Dajka, T. Borkovits, T. Hajdu and G. MarschalkóEAS Publications Series, 82 (2019) 127-133DOI: https://doi.org/10.1051/eas/1982013