(2023) Echo : Polish & Slavic Center 2023 [Nr 1] wiosna/spring.
(2023) Echo : Polish & Slavic Center 2023 [Nr 2] lato/summer.
(2023) Echo : Polish & Slavic Center 2023 [Nr 3] jesień/fall.
(2023) Echo : Polish & Slavic Center 2023 [Nr 4] zima/winter.