09 Feb 2011
On the precision of Ptolemy's geographic coordinates in his Geographike Hyphegesis
Hist. Geo Space. Sci., 2, 29–37,
2011 15 Feb 2011
"A not completely satisfactory attempt" – peak discharges and rainfall-runoff relations for Javanese rivers between 1880 and 1940
Hist. Geo Space. Sci., 2, 39–55,
2011 18 Apr 2011
Review article "A. B. Dobrowolski – the first cryospheric scientist – and the subsequent development of cryospheric science"
Hist. Geo Space. Sci., 2, 75–79,
2011 29 Jun 2011
"Between unmanned and manned space research" Dr. Siegfried J. Bauer for his 80th birthday
Hist. Geo Space. Sci., 2, 81–82,
2011 29 Jun 2011
"Historian of geomagnetism and aeronomy" Obituary – Dr. Wilfried Schröder
Hist. Geo Space. Sci., 2, 83–84,
2011