Signifikansi rasio keungan terhadap resiko sistematik (Studi kasus 8 rasio keuangan 24 emiten di BEJ pengamatan 1999-2003).

Pengaruh rasio keuangan current asset turnover, net profit margin, fixed asset turnover, account receivable turnover account payable turnover, dan inventory turnover terhadap profitabilitas pada perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia Periode 2008-2012 = The impact of financial ratios current asset turnover, net profit margin, fixed asset turnover, account receivable turnover account payable turnover and inventory turnover in the manufacturing company listed on The Indonesia Stock Exchange period 2008-2012

Hubungan rasio keuangan, ukuran perusahaan, dan arus kas pada laporan keuangan interim dan tahunan terhadap abnormal return saham : studi empiris perusahaan manufaktur yang terdaftar di Bursa Efek Indonesia tahun 2002-2006

Analisis Rasio Keuangan dan Ekonomi Makro dalam Memprediksi Financial Distress (Studi Empiris pada Perusahaan Non-Keuangan yang Terdaftar di Bursa Efek Indonesia Periode 2008-2017) = Analysis of Financial Ratios and Macroeconomic Variables for Predicting Financial Distress (Study of Non – Financial Companies Listed in Indonesia Stock Exchange Period 2008 – 2017)

Pengaruh rasio keuangan capital adequacy ratio, loan to deposit ratio, non performing loan giro wajib minimum, efisiensi operasional dan ukuran perusahaan terhadap kinerja bank pada bank umum di Indonesia periode 2006-2013 = The impact of financial ratios capital adequacy ratio, loan to deposit ratio, non performing loan, reserve requirement, operational efficiency and company size on banks performance of commercial banks in Indonesia period 2006-2013