citHeader("To cite package 'ptw' in publications use:")
     
     ## R >= 2.8.0 passes package metadata to citation().
     if(!exists("meta") || is.null(meta)) meta <- packageDescription("ptw")
     year <- sub(".*(2[[:digit:]]{3})-.*", "\\1", meta$Date)
     vers <- paste("R package version", meta$Version)
     
	citEntry(entry="Article",
		 title = "Improved Parametric Time Warping for Proteomics",
		 author = personList(as.person("Tom G. Bloemberg"), 
				    as.person("Jan Gerretzen"),
				    as.person("Hans J. P. Wouters"),
				    as.person("Jolein Gloerich"),
				    as.person("Maurice van Dael"),
				    as.person("Hans J. C. T. Wessels"),
				    as.person("Lambert P. van den Heuvel"),
				    as.person("Paul H. C. Eilers"),
				    as.person("Lutgarde M. C. Buydens"),
				    as.person("Ron Wehrens")),
				    
		 year = "2010",
		 journal = "Chemometrics and Intelligent Laboratory Systems",
  		 volume = "104",
		 number = "1",
		 pages = "65-74",
		 textVersion = 'Bloemberg, T. G. et al. (2010) "Improved
		 Parametric Time Warping for Proteomics", Chemometrics and
		 Intelligent Laboratory Systems, 104 (1), 65-74')

	citEntry(entry="Article",
		 title = "Fast parametric warping of peak lists",
		 author = personList(as.person("Ron Wehrens"),
                     as.person("Tom G. Bloemberg"), 
                     as.person("Paul H. C. Eilers")),
		 year = "2015",
		 journal = "Bioinformatics",
		 DOI = "10.1093/bioinformatics/btv299",
                 textVersion = 'Wehrens, R. et al. (2015) "Fast parametric warping of peak lists", Bioinformatics, in press.')
