J. Lopes, F. Oliveira, and V. Barbosa.
" Practical aspects of `0-sampling algorithms", in <em>Anais do III Encontro de Teoria da Computação</em>, Natal, 2018, doi: <a href="https://doi.org/10.5753/etc.2018.3145">https://doi.org/10.5753/etc.2018.3145</a>.