Analisis pengaruh tax aggressiveness terhadap tingkat utang perusahaan publik industri manufaktur di Indonesia periode 2008-2012 = The influence of corporate tax aggressiveness against debt policy in Indonesia manufacturing public company for the period of 2008-2012.

Analisis effective tax rate dan book-tax differences : studi kasus perusahaan pertambangan batubara yang terdaftar di Bursa Efek Indonesia = Analysis on effective tax rate and book-tax differences : case study on coal mining company listed in Indonesia Stock Exchange

Pengaruh hubungan politik dan reformasi perpajakan terhadap tarif pajak efektif pada perusahaan yang terdaftar di Bursa Efek Indonesia tahun 2008-2009 = Influence of political connection and tax reformation to effective tax rate of listed company in the Indonesian Stock Exchange on 2008-2009

Pengaruh koneksi politik dan tata kelola perusahaan terhadap tarif pajak efektif: studi pada sektor pertambangan yang terdaftar di Bursa Efek Indonesia periode 2008-2017 = The effect of political connection and corporate governance on effective tax rate at mining sector companies listed in Indonesia stock exchange for period 2008-2017

Analisis effective tax rate dan book tax difference berdasarkan sektor industri (studi empiris perusahaan yang terdaftar di BEI periode 2009-2011 = The analysis of effective tax rate and book tax difference based on industry sector (empirical study at indonesia stock exchange listed companies period 2009 - 2011)