@InProceedings{adamek_et_al:LIPIcs.CALCO.2021.6,
  author =	{Ad\'{a}mek, Ji\v{r}{\'\i} and Rosick\'{y}, Ji\v{r}{\'\i}},
  title =	{{Which Categories Are Varieties?}},
  booktitle =	{9th Conference on Algebra and Coalgebra in Computer Science (CALCO 2021)},
  pages =	{6:1--6:14},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-212-9},
  ISSN =	{1868-8969},
  year =	{2021},
  volume =	{211},
  editor =	{Gadducci, Fabio and Silva, Alexandra},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CALCO.2021.6},
  URN =		{urn:nbn:de:0030-drops-153610},
  doi =		{10.4230/LIPIcs.CALCO.2021.6},
  annote =	{Keywords: variety, many-sorted algebra, abstractly finite object, effective object, strong generator}
}