@article{10_21136_CMJ_1983_101880,
     author = {Chao, Chong-Yun and Zhang, Mou-Cheng},
     title = {On the semigroup of fully indecomposable relations},
     journal = {Czechoslovak Mathematical Journal},
     pages = {314--319},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {1983},
     doi = {10.21136/CMJ.1983.101880},
     mrnumber = {699029},
     zbl = {0524.20045},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1983.101880/}
}