New New Rules for Assessing Mathematical Competencies: USER GUIDE elektronický zdroj / zost. Snezhana Gocheva-Ilieva, Araceli Queiruga-Dios. -- 1. vyd. -- Paisii Hilendarski University Publishing House 2020 Plovdiv. -- 435 s. -- ISBN : 978-619-202-575-5. Gocheva-Ilieva, Snezhana. Queiruga-Dios, Araceli