• Partial and relational algebraic theories = Osalised ja relatsioonilised algebralised teooriadNester, Chad Mitchell2024 https://www.ester.ee/record=b5650413*est https://digikogu.taltech.ee/et/Item/696327ea-955a-45ad-bf93-bca34084131f https://doi.org/10.23658/taltech.4/2024