TY - JOUR AU - Zhiyang He TI - A new upper bound on extremal number of even cycles JO - The electronic journal of combinatorics PY - 2021 VL - 28 IS - 2 UR - http://geodesic.mathdoc.fr/articles/10.37236/9861/ DO - 10.37236/9861 ID - 10_37236_9861 ER -