Penerapan pasal 23 Ayat (1) dan pasal 31 Undang-Undang Nomor 23 Tahun 2007 tentang Perkeretaapian dalam Penyelenggaraan Prasarana dan Sarana Perkeretaapian Umum oleh pihak swasta dalam rangka menciptakan persaingan usaha sehat di Indonesia = Application of article 23 paragraph (1) and article 31 of Law Number 23 of 2007 concerning Railways in the Implementation of Public Railway Infrastructure and Facilities by private parties in creating healthy business competition in Indonesia