Herzhoff T, Teichert T. Leadership Sentiment and Price Fluctuations : based on the example of crude oil prices and sentiment of Oil and Gas CEOs. SIER [Internet]. 2021 Jun. 13 [cited 2025 Oct. 28];1(2):1-36. Available from: https://mail.sier-journal.com/index.php/SIER/article/view/7