NON-EXISTENCE OF FLAT PARACONTACT METRIC STRUCTURES IN DIMENSION GREATER THAN OR EQUAL TO FIVE. Ann. Sofia Univ. Fac. Math. and Inf. [Internet]. 2011 Dec. 12 [cited 2025 Dec. 14];100:27-34. Available from: https://annual.uni-sofia.bg/index.php/fmi/article/view/244