Burkhard Englert, Manuel Lerman, Kevin Wald. Homomorphisms and quotients of degree structures. Annals of Pure and Applied Logic, 123(1-3):193-233, 2003. [doi]
@article{EnglertLW03,
title = {Homomorphisms and quotients of degree structures},
author = {Burkhard Englert and Manuel Lerman and Kevin Wald},
year = {2003},
doi = {10.1016/S0168-0072(03)00024-1},
url = {http://dx.doi.org/10.1016/S0168-0072(03)00024-1},
researchr = {https://researchr.org/publication/EnglertLW03},
cites = {0},
citedby = {0},
journal = {Annals of Pure and Applied Logic},
volume = {123},
number = {1-3},
pages = {193-233},
}