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Sri Retnaning Sampurnaningsih, . and Arum Indrasari, . and Maya Sova, . and Luqman Hakim, . (2025) Coal prices as a dominant factor in stock return models: an empirical study of coal mining companies on the indonesia stock exchange. JPPI (Jurnal Penelitian Pendidikan Indonesia), 11 (3). pp. 246-257. ISSN 2477-8524
Luqman Hakim, . and Sri Retnaning Sampurnaningsih, . and Siti Nur’aidawati, . and Aang Aribawa, . (2023) Portfolio ownership in the excess return model at Indonesian stock exchange. JPPI (Jurnal Penelitian Pendidikan Indonesia), 9 (4). pp. 652-666. ISSN 2477-8524