Ahonen A, Hämäläinen M, Ilmoniemi R J, Kajola M J, Knuutila J E T, Simola J T and Vilkman V A 1993 Sampling Theory for Neuromagnetic Detector Arrays IEEE Trans. Biomed. Eng. 40 859-69
Flux/voltage calibration of axial SQUID gradiometers using an optimization procedure
Barbosa C H, Lima E A and Bruno A C 1999 Flux/voltage calibration of axial SQUID gradiometers using an optimization procedure IEEE Trans. Appl. Supercond. 9 3523-6
Highly balanced gradiometer systems based on HTS-SQUIDS for the use in magnetically unshielded environment
Borgmann J, Rijpma A P, ter Brake H J M, Rogalla H and David P 1999 Highly balanced gradiometer systems based on HTS-SQUIDS for the use in magnetically unshielded environment IEEE Trans. Appl. Supercond. 9 3680
Kado H, Higuchi M, Shimogawara M, Haruta Y, Adachi Y, Kawai J, Ogata H and Uehara G 1999 Magnetoencephalogram systems developed at KIT IEEE Trans. Appl. Supercond. 9 4057-62
BabySQUID: A mobile, high-resolution multichannel magnetoencephalography system for neonatal brain assessment
Okada Y, Pratt K, Atwood C, A M, Reinemann R, Nurminen J and Paulson D 2006 BabySQUID: A mobile, high-resolution multichannel magnetoencephalography system for neonatal brain assessment Rev. Sci. Instrum. 77 24301-9
SQUID arrays for simultaneous magnetic measurements: Calibration and source localization performance
Ribeiro P C, Williamson S J and Kaufman L 1988 SQUID arrays for simultaneous magnetic measurements: calibration and source localization performance IEEE Trans. Biomed. Eng. 35 551-60
Spatiotemporal signal space separation method for rejecting nearby interference in MEG measurements
Taulu S and Simola J 2006 Spatiotemporal signal space separation method for rejecting nearby interference in MEG measurements Phys. Med. Biol. 51 1759-68