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app01-2298	dx.doi.org	http://dx.doi.org/10.14311/app.2014.01.0001
app01-2298	www.mppmu.mpg.de	http://www.mppmu.mpg.de/∼rwagner/sources
app01-2298	tevcat.uchicago.edu	http://tevcat.uchicago.edu)
app01-2298	dx.doi.org	http://dx.doi.org/10.1016/j.astropartphys.2008.01.002
app01-2298	dx.doi.org	http://dx.doi.org/10.1103/physrevlett.104.091101
app01-2298	dx.doi.org	http://dx.doi.org/10.1088/2041-8205/717/1/l71
app01-2298	dx.doi.org	http://dx.doi.org/10.1126/science.1136395
app01-2298	dx.doi.org	http://dx.doi.org/10.1126/science.1157087
app01-2298	dx.doi.org	http://dx.doi.org/10.1086/525270
app01-2298	dx.doi.org	http://dx.doi.org/10.1086/309512
app01-2298	dx.doi.org	http://dx.doi.org/10.1111/j.1365-2966.2006.10836.x
app01-2298	dx.doi.org	http://dx.doi.org/10.1088/1367-2630/11/6/065016
app01-2298	dx.doi.org	http://dx.doi.org/10.1038/427790a
app01-2298	dx.doi.org	http://dx.doi.org/10.1086/521047
app01-2298	dx.doi.org	http://dx.doi.org/10.1086/377127
app01-2298	dx.doi.org	http://dx.doi.org/10.1038/nature02065
app01-2298	dx.doi.org	http://dx.doi.org/10.1023/a:1011607814902
app01-2298	dx.doi.org	http://dx.doi.org/10.1023/b:spac.0000032807.99883.09
app01-2298	www.johnstonsarchive.net	http://www.johnstonsarchive.net
app01-2298	dx.doi.org	http://dx.doi.org/10.1088/0004-637x/693/2/1610
app01-2298	dx.doi.org	http://dx.doi.org/10.1086/508936
app01-2298	dx.doi.org	http://dx.doi.org/10.1007/s10509-007-9445-4
app01-2298	dx.doi.org	http://dx.doi.org/10.1088/1742-6596/335/1/012005
app01-2298	dx.doi.org	http://dx.doi.org/10.1142/9789812790873_0025
app01-2298	dx.doi.org	http://dx.doi.org/10.1088/0004-637x/723/1/869
app01-2298	dx.doi.org	http://dx.doi.org/10.1063/1.1587092
app01-2298	dx.doi.org	http://dx.doi.org/10.1086/431173
app01-2298	dx.doi.org	http://dx.doi.org/10.1038/35050020
app01-2298	dx.doi.org	http://dx.doi.org/10.1038/nature08459
app01-2298	dx.doi.org	http://dx.doi.org/10.1063/1.3076687
app01-2298	dx.doi.org	http://dx.doi.org/10.1086/376731