Minhando, E., Sudarmo, S. and Rahmanto, A. (2021) “Integrated contact center HAI (Help, Answer, Improve) as information service innovation at the Ministry of Finance, Indonesia”, Management and Entrepreneurship: Trends of Development, 3(17), pp. 27-42. doi: https://doi.org/10.26661/2522-1566/2021-3/17-03.