Kongphok, Pimkamol. “The Legal Significance and Evidentiary Effect of the ‘Weight and Quantity Unknown’ Clauses in Bills of Lading under the Rotterdam Rules”. Naresuan University Law Journal 14, no. 2 (December 24, 2021): 1–16. accessed December 11, 2025. https://so04.tci-thaijo.org/index.php/lawnujournal/article/view/253578.