Barriers to the Development of Regional Competitiveness in the Context of Regional Economies - EU, Latvia, Region Vidzeme Case Study. - Liga Braslina; Anda Batraga; Aija Legzdina; Jelena Salkovska; Henrijs Kalkis; Daina Skiltere; Girts Braslins; Santa Bormane (AHFE (9), 2020)