Daniel Yuh Chao. Virtual First-Order Structure. J. Inf. Sci. Eng., 23(2):371-385, 2007. [doi]
@article{Chao07a, title = {Virtual First-Order Structure}, author = {Daniel Yuh Chao}, year = {2007}, url = {http://www.iis.sinica.edu.tw/page/jise/2007/200703_02.html}, researchr = {https://researchr.org/publication/Chao07a}, cites = {0}, citedby = {0}, journal = {J. Inf. Sci. Eng.}, volume = {23}, number = {2}, pages = {371-385}, }