1 Laboratory for Meteorology, Physics, and Biophysics, Faculty of Agriculture, University of Novi Sad, Novi Sad, Serbia. Electronic address: igor.balaz@df.uns.ac.rs.
2 Department of Engineering Mathematics, University of Bristol, Bristol, UK. Electronic address: sabine.hauert@bristol.ac.uk.
3 Unconventional Computing Laboratory, University of the West of England, UK. Electronic address: Andrew.Adamatzky@uwe.ac.uk.