Phuangkhansai, S.; Phonepaseuth, P.; Mangnomek, V.; Phearkeo, O.; Junthavexaiy, L. Efficiency of Charcoal Briquettes Produce from Waste Bamboo Sticks at Buffet Restaurants in Xaythany District, Vientiane Capital. sujournal 2021, 7, 217-228.