@article{Dvo_k_2010,
    doi = {10.1002/jgt.20461},
    url = {https://doi.org/10.1002%2Fjgt.20461},
    year = {2010},
    month = {jun},
    publisher = {Wiley},
    volume = {64},
    number = {4},
    pages = {330--342},
    author = {Zden{\v{e}}k Dvo{\v{r}}{\'{a}}k},
    title = {On recognizing graphs by numbers of homomorphisms},
    journal = {Journal of Graph Theory}
}

@article{Dvo_k_2010, doi = {10.1002/jgt.20461}, url = {https://doi.org/10.1002%2Fjgt.20461}, year = {2010}, month = {jun}, publisher = {Wiley}, volume = {64}, number = {4}, pages = {330--342}, author = {Zden{\v{e}}k Dvo{\v{r}}{\'{a}}k}, title = {On recognizing graphs by numbers of homomorphisms}, journal = {Journal of Graph Theory} }