@article{Hocking2011a,
author = "W. K. Hocking and G. K. Kumar",
title = "Long term behaviour of the MLT quasi-7-day wave at two radar-sites at northern polar latitudes",
year = 2011 ,
journal = "J. Atmos. Solar-Terr. Phys.",
volume = 73,
pages = "1616-1628",
keywords = "rbo",
doi = "10.1016/j.jastp.2011.02.004"
}