KOŠŤÁLOVÁ, Alena. Identification of regional disparities in the field of internet services by the chi-square test for independence. In RelStat 2012 : Proceedings of the 12th International Conference RELIABILITY and STATISTICS in TRANSPORTATION and COMMUNICATION. Riga, Latvia, 17.-20.10. 2012, 2012, s.36-44. ISBN 978-9984-818-49-8. V*