Gong, Hwang-cherng. 1999. {X}īxiàyǔ de jǐnyuányīn jíqí láiyuán \zh{西夏語的緊元音及其起源} ({T}ense vowels in {T}angut and their origin). Bulletin of the Institute of History and Philology 70. 531-558. ((\zh{龔煌城})).
@article{jacquesestimative-gong99jinyuanyin, author = {Gong, Hwang-cherng}, journal = {Bulletin of the Institute of History and Philology}, note = {(\zh{龔煌城})}, number = {2}, pages = {531-558}, title = {{X}īxiàyǔ de jǐnyuányīn jíqí láiyuán \zh{西夏語的緊元音及其起源} ({T}ense vowels in {T}angut and their origin)}, volume = {70}, year = {1999} }