2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/38127The structure of the photon is studied in high energy photon-proton interactions at HERA and photon-photon interactions at LEP. The status of these measurements is reviewed.24 pages, 31 eps files, requires lprocl.sty, to be published in proceedings, of the XVIII International Symposium on Lepton Photon Interactions, Hamburg, Germany, July 28--August 1, 1997, typo fixed in Equation 1High Energy Physics - Experimenttext