@article {paikowsky2016trends,
	title = {Trends in space activities in 2014: The significance of the space activities of governments},
	journal = {Acta Astronautica},
	volume = {118},
	year = {2016},
	pages = {187{\textendash}198},
	publisher = {Pergamon},
	author = {Paikowsky, Deganit and Baram, Gil and Ben-Israel, Isaac}
}
