National Research Council (U.S.). Space Science Board, COSPAR, United States Space Science Program: Report to COSPAR., National Academies, (lire en ligne), p. 47
Landini, Russo et Tagliaferri, « Solar Eclipse of May 20, 1966, observed by the Solrad 8 Satellite in X-ray and Ultra-violet Bands », Nature, vol. 211, no 5047, , p. 393 (DOI10.1038/211393a0, Bibcode1966Natur.211..393L)
Landini, Russo et Tagliaferri, « Solar Eclipse of May 20, 1966, observed by the Solrad 8 Satellite in X-ray and Ultra-violet Bands », Nature, vol. 211, no 5047, , p. 393 (DOI10.1038/211393a0, Bibcode1966Natur.211..393L)