Tinjauan Hukum Perdata Internasional dalam Gugatan Perbuatan Melanggar Hukum dengan Unsur Asing di Pengadilan Indonesia Terkait Perjanjian Utang-Pitang Untuk Kegiatan Jual-Beli Saham. = The Review of Private International Law on Tort Lawsuit with Foreign Elements in Indonesian Court related to Loan Agreement for the Sale and Purchase of Shares.