A. V. Kelarev. Combinatorial Properties and Homomorphisms of Semigroups. IJAC, 4(3):443-450, 1994. [doi]
@article{Kelarev94, title = {Combinatorial Properties and Homomorphisms of Semigroups}, author = {A. V. Kelarev}, year = {1994}, doi = {10.1142/S0218196794000087}, url = {http://dx.doi.org/10.1142/S0218196794000087}, researchr = {https://researchr.org/publication/Kelarev94}, cites = {0}, citedby = {0}, journal = {IJAC}, volume = {4}, number = {3}, pages = {443-450}, }