Solar activity during the Holocene: the Hallstatt cycle and its consequence for grand minima and maxima von Usoskin, I. G., Gallet, Y., Lopes, F., Kovaltsov, G. A., Hulot, G.

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Solar activity over nine millennia: A consistent multi-proxy reconstruction von Wu, C. J., Usoskin, I. G., Krivova, N., Kovaltsov, G. A., Baroni, M., Bard, E., Solanki, S. K.

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Unusual activity of the Sun during recent decades compared to the previous 11,000 years von Solanki, S. K, Usoskin, I. G, Kromer, B, Schüssler, M, Beer, J

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Solar total and spectral irradiance reconstruction over the last 9000 years von Wu, C.-J., Krivova, N. A., Solanki, S. K., Usoskin, I. G.

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Recalibration of the Sunspot-Number: Status Report von Clette, F., Lefèvre, L., Chatzistergos, T., Hayakawa, H., Carrasco, V. M. S., Arlt, R., Cliver, E. W., Wit, T. Dudok de, Friedli, T. K., Karachik, N., Kopp, G., Lockwood, M., Mathieu, S., Muñoz-Jaramillo, A., Owens, M., Pesnell, D., Pevtsov, A., Svalgaard, L., Usoskin, I. G., Driel-Gesztelyi, L. van, Vaquero, J. M.

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The AD775 cosmic event revisited: the Sun is to blame von Usoskin, I. G., Kromer, B., Ludlow, F., Beer, J., Friedrich, M., Kovaltsov, G. A., Solanki, S. K., Wacker, L.

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Properties of Ground Level Enhancement Events and the Associated Solar Eruptions During Solar Cycle 23 von Gopalswamy, N., Xie, H., Yashiro, S., Akiyama, S., Makela, P., Usokin, I. G.

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Grand minima and maxima of solar activity: new observational constraints von Usoskin, I. G., Solanki, S. K., Kovaltsov, G. A.

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A New Calibrated Sunspot Group Series Since 1749: Statistics of Active Day Fractions von Usoskin, I. G., Kovaltsov, G. A., Lockwood, M., Mursula, K., Owens, M., Solanki, S. K.

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Estimating the frequency of extremely energetic solar events, based on solar, stellar, lunar, and terrestrial records von Schrijver, C. J., Beer, J., Baltensperger, U., Cliver, E. W., Güdel, M., Hudson, H. S., McCracken, K. G., Osten, R. A., Peter, T., Soderblom, D. R., Usoskin, I. G., Wolff, E. W.

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GLE and Sub-GLE Redefinition in the Light of High-Altitude Polar Neutron Monitors von Poluianov, S. V., Usoskin, I. G., Mishev, A. L., Shea, M. A., Smart, D. F.

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Sunspot positions and sizes for 1825-1867 from the observations by Samuel Heinrich Schwabe von Arlt, R., Leussu, R., Giese, N., Mursula, K., Usoskin, I. G.

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Neutron monitor yield function: New improved computations von Mishev, A. L., Usoskin, I. G., Kovaltsov, G. A.

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Level and length of cyclic solar activity during the Maunder minimum as deduced from the active-day statistics von Vaquero, J. M., Kovaltsov, G. A., Usoskin, I. G., Carrasco, V. M. S., Gallego, M. C.

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THE FIRST GROUND LEVEL ENHANCEMENT EVENT OF SOLAR CYCLE 24: DIRECT OBSERVATION OF SHOCK FORMATION AND PARTICLE RELEASE HEIGHTS von Gopalswamy, N, Xie, H, Akiyama, S, Yashiro, S, Usoskin, I G, Davila, J M

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Tests of Sunspot Number Sequences: 3. Effects of Regression Procedures on the Calibration of Historic Sunspot Data von Lockwood, M., Owens, M. J., Barnard, L., Usoskin, I. G.

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Dependence of the Sunspot-Group Size on the Level of Solar Activity and its Influence on the Calibration of Solar Observers von Usoskin, I. G., Kovaltsov, G. A., Chatzistergos, T.

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Occurrence Probability of Large Solar Energetic Particle Events: Assessment from Data on Cosmogenic Radionuclides in Lunar Rocks von Kovaltsov, G. A., Usoskin, I. G.

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A Test of the Active-Day Fraction Method of Sunspot Group Number Calibration: Dependence on the Level of Solar Activity von Willamo, T., Usoskin, I. G., Kovaltsov, G. A.

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Possible effect of extreme solar energetic particle events of September–October 1989 on polar stratospheric aerosols: a case study von Mironova, I. A, Usoskin, I. G

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