@misc{indiciaece637823a99a,
  title = {Transition between positive and negative hexagons in optical pattern formation.},
  author = {T Ackemann and YA Logvin and A Heuer and W Lange},
  year = {1995},
  doi = {10.1103/physrevlett.75.3450},
  url = {https://pubmed.ncbi.nlm.nih.gov/10059589/},
  note = {Source identifier: 10059589}
}