1. Department of Actuarial Science, Univesitas Muhammadiyah Bulukumba, Jl Poros Bulukumba - Bantaeng, Km. 9, Kabupaten Bulukumba, Indonesia., Indonesia
2. Department of Mathematics, Universitas Hasanuddin Makassar, Indonesia
3. Department of Mathematics, Universitas Gajah Mada Yogyakarta, Indonesia