Three recent articles from one of our flagship journals, Advances in Space Research, have been made Open Access (OA) for the next three months, courtesy of Elsevier:

“Theoretical approach to circular solar sail deployment”, V. Ya. Kezerashvili et al. http://spkl.io/6183fT5BT

“Model study of the influence of atmospheric waves on variations of upper atmosphere and ionosphere parameters during a meteorological storm on May 29, 2017”, Y. Kurdyaeva et al.
http://spkl.io/6189fT5BP

“Comparison between GPS network analysis with undifferenced and double differenced integer ambiguity resolution: A practical perspective”, G. Chen et al.
http://spkl.io/6187fT5BF