Dung N, Dung T, Ba T. RESEARCHED THE METHOD TO DETERMINE ICE RATIO IN MATERIALS FREEZE AND OPTIMAL TEMPERATURE OF FREEZE IN STAGE 1 OF PROCESSING FREEZE - DRYING. VNUHCM Journal of Science and Technology Development [Internet]. 31Dec.2008 [cited 30Aug.2025];11(12):74-6. Available from: https://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/2718