Nguyen Thu Huyen. “Research Results about Temperature Changes in Co-Composting Process of Organic Solid Waste With Feacal Sludge through Aerobic Process (co-Composting) With Different Mixing Ratios.”. UTEHY Journal of Applied Science and Technology, Vol. 11, Oct. 2016, pp. 79-82, http://tapchi.utehy.edu.vn/index.php/jst/article/view/260.