@misc{indiciae06f5e3f20971,
  title = {Search for the decay pi 0-->e+e-},
  author = {C Niebuhr and R Eichler and L Felawka and T Kozlowski and S Playfer and HK Walter and van der Schaaf A and S Egli and M Grossmann-Handschin and E Hermes and F Muheim and H Pruys and D Vermeulen and W Bertl and N Lordong and J Martino and RM Drees and C Waltham and U Bellgardt},
  year = {1989},
  doi = {10.1103/physrevd.40.2796},
  url = {https://pubmed.ncbi.nlm.nih.gov/10012132/},
  note = {Source identifier: 10012132}
}