1. Jensen, P.: ‘Electromagnetic near-field-far-field correlations’, 1970, Ph.D. thesis LD–15, Technical University of Denmark, Laboratory of Electromagnetic Theory
2. ‘Non-planar near-field measurements: spherical scanning’, National Bureau of Standards, Boulder, Colo., 1975
3. ‘Development of spherical near-field far-field antenna test technique’, Final report on ESTEC contract 2478/75 AK, TICRA Report S-45-02, TICRA ApS, 1112 Copenhagen, Denmark