1 Kilcik A, "Time distributions of large and small sunspot groups over four solar cycles" 731 : 30-37, 2011
2 Veronig AM, "The solar soft X-ray background flux and its relation to flare occurrence" 219 : 125-133, 2004
3 Lustig G, "The growth and decay of sunspots: comparison between the Greenwich and Mount Wilson sunspot data" 157 : 389-392, 1995
4 Devore CR, "The concentration of the large-scale solar magnetic field by a meridional surface flow" 92 : 1-14, 1984
5 McIntosh PS, "The classification of sunspot groups" 125 : 251-267, 1990
6 McIntosh PS, "The birth and evolution of sunspots - Observations" 7-54, 1981
7 Hathaway DH, "Sunspot group decay" 250 : 269-278, 2008
8 Chang H-Y, "Stochastic properties in North-South asymmetry of sunspot area" 13 : 195-201, 2008
9 Zharkov SI, "Statistical analysis of the sunspot area and magnetic flux variations in 1996 2005 extracted from the Solar Feature Catalogue" 38 : 868-875, 2006
10 Kane RP, "Some implications using the group sunspot number reconstruction" 205 : 383-401, 2002
1 Kilcik A, "Time distributions of large and small sunspot groups over four solar cycles" 731 : 30-37, 2011
2 Veronig AM, "The solar soft X-ray background flux and its relation to flare occurrence" 219 : 125-133, 2004
3 Lustig G, "The growth and decay of sunspots: comparison between the Greenwich and Mount Wilson sunspot data" 157 : 389-392, 1995
4 Devore CR, "The concentration of the large-scale solar magnetic field by a meridional surface flow" 92 : 1-14, 1984
5 McIntosh PS, "The classification of sunspot groups" 125 : 251-267, 1990
6 McIntosh PS, "The birth and evolution of sunspots - Observations" 7-54, 1981
7 Hathaway DH, "Sunspot group decay" 250 : 269-278, 2008
8 Chang H-Y, "Stochastic properties in North-South asymmetry of sunspot area" 13 : 195-201, 2008
9 Zharkov SI, "Statistical analysis of the sunspot area and magnetic flux variations in 1996 2005 extracted from the Solar Feature Catalogue" 38 : 868-875, 2006
10 Kane RP, "Some implications using the group sunspot number reconstruction" 205 : 383-401, 2002
11 Howard RF, "Some characteristics of the development and decay of active region magnetic flux" 142 : 47-65, 1992
12 de Toma G, "Solar cycle 23: an anomalous cycle?" 609 : 1140-1152, 2004
13 Schrijver CJ, "Simulations of the photospheric magnetic activity and outer atmospheric radiative losses of cool stars based on characteristics of the solar magnetic field" 547 : 475-490, 2001
14 Wang YM, "Role of a variable meridional flow in the secular evolution of the sun’s polar fields and open flux" 577 : 53-57, 2002
15 Letfus V, "Relative sunspot numbers in the first half of eighteenth century" 194 : 175-184, 2000
16 오성진, "Relative Sunspot Number Observed from 2002 to 2011 at ButterStar Observatory" 한국우주과학회 29 (29): 103-113, 2012
17 Harvey KL, "Properties and emergence of bipolar active regions" 148 : 85-118, 1993
18 Cortie AL, "On drift in longitude of groups of faculae on the sun’s surface" 14 : 317-322, 1901
19 Willson RC, "Observations of solar irradiance variability" 211 : 700-702, 1981
20 Abramenko V, "Magnetic energy spectra in solar active regions" 720 : 717-722, 2010
21 Javaraiah J, "Long-term variations in the growth and decay rates of sunspot groups" 270 : 463-483, 2011
22 Clette F, "Koeckelenbergh A, et al., From the Wolf number to the International Sunspot Index: 25 years of SIDC" 40 : 919-928, 2007
23 Abramenko V, "Intermittency and multifractality spectra of the magnetic field in solar active regions" 722 : 122-130, 2010
24 Vaquero JM, "Historical sunspot observations: a review" 40 : 929-941, 2007
25 Chang H-Y, "Bimodal distribution of area-weighted latitude of sunspots and solar North-South asymmetry" 17 : 247-253, 2012
26 Norquist DC, "An analysis of the sunspot groups and flares of solar cycle 23" 269 : 111-127, 2011
27 Tur TJ, "A trigger mechanism for the emerging flux model of solar flares" 58 : 181-, 1978
28 Lefèvre L, "A global small sunspot deficit at the base of the index anomalies of solar cycle 23" 536 : 11-14, 2011