Podkletnov, E.; Nieminen, R. (December 1992). "A possibility of gravitational force shielding by bulk YBa2Cu3O7−x superconductor". Physica C: Superconductivity. 203 (3–4): 441–444. Bibcode:1992PhyC..203..441P. doi:10.1016/0921-4534(92)90055-H.
Hathaway, G; Cleveland, B; Bao, Y (April 2003). "Gravity modification experiment using a rotating superconducting disk and radio frequency fields". Physica C: Superconductivity. 385 (4): 488–500. Bibcode:2003PhyC..385..488H. doi:10.1016/S0921-4534(02)02284-0.
Maclay, G. Jordan (17 April 2000). "Analysis of zero-point electromagnetic energy and Casimir forces in conducting rectangular cavities". Physical Review A. 61 (5): 052110. Bibcode:2000PhRvA..61e2110M. doi:10.1103/PhysRevA.61.052110.
Podkletnov, E.; Nieminen, R. (December 1992). "A possibility of gravitational force shielding by bulk YBa2Cu3O7−x superconductor". Physica C: Superconductivity. 203 (3–4): 441–444. Bibcode:1992PhyC..203..441P. doi:10.1016/0921-4534(92)90055-H.
Hathaway, G; Cleveland, B; Bao, Y (April 2003). "Gravity modification experiment using a rotating superconducting disk and radio frequency fields". Physica C: Superconductivity. 385 (4): 488–500. Bibcode:2003PhyC..385..488H. doi:10.1016/S0921-4534(02)02284-0.
Maclay, G. Jordan (17 April 2000). "Analysis of zero-point electromagnetic energy and Casimir forces in conducting rectangular cavities". Physical Review A. 61 (5): 052110. Bibcode:2000PhRvA..61e2110M. doi:10.1103/PhysRevA.61.052110.