@book{shackelford_introduction_2015,
	address = {Boston},
	edition = {Eighth edition},
	title = {Introduction to materials science for engineers},
	isbn = {9780133826654},
	publisher = {Pearson},
	author = {Shackelford, James F.},
	year = {2015},
	keywords = {Materials},
}

@book{curtis_orbital,
	title = {Orbital mechanics for engineering students},
	isbn = {9780128240250 9780323853453 9780081021330},
	language = {English},
	author = {Curtis, Howard D},
	year = {2020},
	note = {OCLC: 1235349370},
	publisher = {Butterworth-Heinemann Publications},
	edition = {Fourth edition}

}