Google Trends for Data Mining. Study of Czech Towns. - Jirí Horák; Igor Ivan; Pavel Kukuliac; Tomás Inspektor; Branislav Devecka; Markéta Návratová (ICCCI, 2013)

Comparing Residents' Fear of Crime with Recorded Crime Data - Case Study of Ostrava, Czech Republic. - Jirí Pánek; Igor Ivan; Lucie Macková (ISPRS Int. J. Geo Inf., 2019)