Pengaruh hutang terhadap Market Power perusahaan di Indonesia (studi empiris pada perusahaan non keuangan yang terdaftar di Bursa Efek Indonesia (BEI) periode 2007-2010) = The Impact of debt to Market Power of company in Indonesia (empirical study on non financial companies listed on Indonesia Stock Exchange in the period 2007-2010)

Pengaruh struktur modal terhadap harga saham pada perusahaan yang terdaftar di Bursa Efek Indonesia periode 2010-2014 = Effect of capital structure on stock price at company listed in Indonesia Stock Exchange period 2010-2014

Analisis pengaruh bauran utang ekuitas terhadap profitabilitas pemegang saham pada perusahaan non keuangan yang terdaftar di Bursa Efek Indonesia periode 2004- 2013 = The effect of debt equity mix on shareholders profitability of non financial companies listed in Indonesian Stock Exchange during 2004-2013

Analisis pengaruh leverage terhadap investasi pada perusahaan non keuangan yang terdaftar di Bursa Efek Indonesia tahun 2007-2014 = Analysis of the effect of leverage on investment in listing non financial firms in Indonesia Stock Exchange for period 2007-2014

Analisis Faktor-Faktor Determinan Cash Holdings dan Cash Holdings Speed of Adjustment pada Perusahaan Non-Finansial yang Terdaftar di Bursa Efek Indonesia Periode 2010-2019 = Determinant of Cash Holdings and Cash Holdings Speed of Adjustment on Non-Financial Firms Listed on Indonesian Stock Exchange Period Of 2010-2019