Xie, Y., Li, Y. and Yang, A. (2014) The pasting constructions for effect algebras. Mathematica Slovaca, Vol. 64 (Issue 5), pp. 1051-1074. https://doi.org/10.2478/s12175-014-0258-y
Xie, Yongjan, Li, Yongming and Yang, Aili. "The pasting constructions for effect algebras" Mathematica Slovaca 64, no. 5 (2014): 1051-1074. https://doi.org/10.2478/s12175-014-0258-y