Michalke, M. (2013). rk.ClusterAnalysis: RKWard GUI to conduct k-means, model based and hierarchical cluster analyses (Version 0.01-10). Available from http://rkward.sf.net

			@Manual{,
						title = {rk.ClusterAnalysis: RKWard GUI to conduct k-means, model based and hierarchical cluster analyses},
						author = {Meik Michalke},
						year = {2013},
						note = {(Version 0.01-10)},
						url = {http://rkward.sf.net},
					}