* '''Deterministic asynchronous updated Boolean networks''' ('''DRBN'''s) are not synchronously updated but a deterministic solution still exists. A node ''i'' will be updated when ''t ≡ Q<sub>i</sub> (''mod'' P<sub>i</sub>)'' where ''t'' is the time step.<ref name=GershensonDrbn>{{cite book|last1=Gershenson|first1=Carlos|last2=Broekaert|first2=Jan|last3=Aerts|first3=Diederik|title=Contextual Random Boolean Networks|journal=Advances in Artificial Life|date=14 September 2003|volume=2801|pages=615–624|doi=10.1007/978-3-540-39432-7_66|arxiv=nlin/0303021|series=Lecture Notes in Computer Science|trans-title=7th European Conference, ECAL 2003|location=Dortmund, Germany|isbn=978-3-540-39432-7}}</ref> | * '''Deterministic asynchronous updated Boolean networks''' ('''DRBN'''s) are not synchronously updated but a deterministic solution still exists. A node ''i'' will be updated when ''t ≡ Q<sub>i</sub> (''mod'' P<sub>i</sub>)'' where ''t'' is the time step.<ref name=GershensonDrbn>{{cite book|last1=Gershenson|first1=Carlos|last2=Broekaert|first2=Jan|last3=Aerts|first3=Diederik|title=Contextual Random Boolean Networks|journal=Advances in Artificial Life|date=14 September 2003|volume=2801|pages=615–624|doi=10.1007/978-3-540-39432-7_66|arxiv=nlin/0303021|series=Lecture Notes in Computer Science|trans-title=7th European Conference, ECAL 2003|location=Dortmund, Germany|isbn=978-3-540-39432-7}}</ref> |