@article {802,
	title = {The First Satellite of Jupiter},
	journal = {Abdruck aus den Astr. Nachr. Bd. 146.},
	year = {1898},
	keywords = {astronomy, Douglass, historic, jupiter, satellite},
	author = {Douglass, A.E.}
}
@article {800,
	title = {Present Rotation Period of the First Satellite of Jupiter and Its Change in Form and Period Since 1892},
	journal = {The Astronomical Journal},
	year = {1898},
	keywords = {astronomy, Douglass, historic, jupiter, rotation, satellite},
	author = {Douglass, A.E.}
}
@article {795,
	title = {Drawings of Jupiter{\textquoteright}s Third Satellite},
	journal = {Abdruck aus den Astr. Nachr. Bd. 143},
	year = {1897},
	keywords = {astronomy, Douglass, historic, jupiter, satellite},
	author = {Douglass, A.E.}
}
