PHOMLASABOUD, K. “ປຽບທຽບຜົນຜະລິດຂອງເຫັດນາງລົມ ໂດຍໃຊ້ວັດສະດຸທີ່ແຕກຕ່າງກັນ”. Souphanouvong University Journal Multidisciplinary Research and Development, vol. 2, no. 1, June 2016, pp. 70-78, http://www.su-journal.com/index.php/su/article/view/18.