Zulfa Fauziah Irsyada Baidlowy, Bayu Rama Laksono, Palil MR. Abnormal Return, Trading Volume Activity, And Security Return Variability Before And During The Russian Invasion Of Ukraine On The Stock Performance Of Pt Krakatau Steel (Persero) Tbk. IECBA [Internet]. 2024 Nov. 30 [cited 2025 Apr. 18];2(01):23-40. Available from: https://proceeding.unesa.ac.id/index.php/iecba/article/view/2863