Alternative space definitions for P systems with active membranes Artiom AlhazovAlberto LeporatiClaudio Zandron Regular Paper Open access 16 April 2021 Pages: 87 - 96
Travelling salesman problem in tissue P systems with costs Bogdan AmanGabriel Ciobanu Regular Paper 07 May 2021 Pages: 97 - 104
Division rules for tissue P systems inspired by space filling curves Rodica CeterchiDavid Orellana-MartÃnGexiang Zhang Regular Paper 29 March 2021 Pages: 105 - 115
Memory associated with membranes systems Gabriel CiobanuG. Michele Pinna Regular Paper 24 March 2021 Pages: 116 - 132
Spiking neural P systems: matrix representation and formal verification Marian GheorgheRaluca LefticaruHenry N. Adorna Regular Paper Open access 27 April 2021 Pages: 133 - 148
A return to stochasticity and probability in spiking neural P systems Prometheus Peter L. LazoFrancis George C. CabarleJan Michael C. Yap Regular Paper 16 March 2021 Pages: 149 - 161