@misc{indiciaeb277d96b30ed,
  title = {van der Waals force between a spherical tip and a solid surface.},
  author = {C Girard and Van Labeke D and JM Vigoureux},
  year = {1989},
  doi = {10.1103/physrevb.40.12133},
  url = {https://pubmed.ncbi.nlm.nih.gov/9991842/},
  note = {Source identifier: 9991842}
}