@book{Ne_et_il_2012,
    doi = {10.1007/978-3-642-27875-4},
    url = {https://doi.org/10.1007%2F978-3-642-27875-4},
    year = {2012},
    publisher = {Springer Berlin Heidelberg},
    author = {Jaroslav Ne{\v{s}}et{\v{r}}il and Patrice Ossona de Mendez},
    title = {Sparsity}
}

@book{Ne_et_il_2012, doi = {10.1007/978-3-642-27875-4}, url = {https://doi.org/10.1007%2F978-3-642-27875-4}, year = {2012}, publisher = {Springer Berlin Heidelberg}, author = {Jaroslav Ne{\v{s}}et{\v{r}}il and Patrice Ossona de Mendez}, title = {Sparsity} }