@conference {339,
	title = {Visualizing the Evolution of Systems and their Library Dependencies},
	booktitle = {Proceedings of the 2nd IEEE Working Conference on Software Visualization (VISSOFT14)},
	year = {2014},
	keywords = {api usage, empirical study, library usage, visualization},
	author = {Kula, Raula Gaikovina and Coen De Roover and German, Daniel and Ishio, Takashi and Inoue, Katsuro}
}
