1.
Avotina M, Ĺ uste A. CHANGES IN MATHEMATICAL OLYMPIAD PROBLEM SETS IN LATVIA. ActPaed [Internet]. 2015 Dec. 28 [cited 2024 May 2];35:45-52. Available from: https://www.journals.vu.lt/acta-paedagogica-vilnensia/article/view/9189