المؤلفون: Spalek, G., Billen, J. H., Garcia, J. A., Giles, P. M., Hansborough, L. D., McMurry, D. E., Stevens, S. B.

المصدر: IEEE Transactions on Nuclear Science IEEE Trans. Nucl. Sci. Nuclear Science, IEEE Transactions on. 32(5):2860-2862 Oct, 1985