Péter Csikvári, Zhicong Lin. Homomorphisms of Trees into a Path. SIAM J. Discrete Math., 29(3):1406-1422, 2015. [doi]
@article{CsikvariL15, title = {Homomorphisms of Trees into a Path}, author = {Péter Csikvári and Zhicong Lin}, year = {2015}, doi = {10.1137/140993995}, url = {http://dx.doi.org/10.1137/140993995}, researchr = {https://researchr.org/publication/CsikvariL15}, cites = {0}, citedby = {0}, journal = {SIAM J. Discrete Math.}, volume = {29}, number = {3}, pages = {1406-1422}, }