中国科学院数学与系统科学研究院期刊网
The Existence of States on Effect Algebras
Kun Li ZHANG, Huai Xin CAO, Zhi Hua GUO
Acta Mathematica Sinica, Chinese Series . 2013, (3): 301 -310 .  DOI: 10.12386/A2013sxxb0031