List of Articles Single and Multiple Bubbles Open Access Article Abstract Page Full-Text 1 - Speculative Bubbles in the Bitcoin Digital Currency Market Majid Hatefi Majoomard Omolbanin Jalali Mohammad Rahimi Ghasemabadi Open Access Article Abstract Page Full-Text 2 - Measuring multiple bubbles in the housing sector (land and rent house): A recursive unit root test approach Madjid Hatefi Madjumerd omolbanin Jalali Mohammad Rahimi Ghasemabadi