المؤلفون: Rozgonjuk, Dmitri, Kraav, Tiina, Mikkor, Kristel, Orav-Puurand, Kerli, Täht, Karin
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::4c9df13a546edb642d8209c5cb4b9c7cTest
المؤلفون: Rozgonjuk, Dmitri, Täht, Karin, Vassil, Kristjan
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::130bc81ab4f0e78300e93c622771d23eTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db0f27680b8350bcf5694d0d90d7f45bTest