量化上下文无关语言的代数性质
付雯静,韩召伟
Algebraic Properties of Quantitative Context-free Languages
FU Wen-jing and HAN Zhao-wei
计算机科学 . 2017, (7): 57 -60 .  DOI: 10.11896/j.issn.1002-137X.2017.07.010