citHeader("To cite package 'protr' in publications use:")

if(!exists("meta") || is.null(meta)) meta <- packageDescription("protr")
year <- sub(".*(2[[:digit:]]{3})-.*", "\\1", meta$Date)
vers <- paste("R package version", meta$Version)

citEntry(entry = "Manual",
         title = "protr: Generating Various Numerical Representation Schemes of Protein Sequence",
         author = personList(as.person("Nan Xiao"),
                             as.person("Qing-Song Xu"),
                             as.person("Dong-Sheng Cao")),                    
         year = year,
         note = vers,
         textVersion =
           paste("Nan Xiao, Qing-Song Xu, Dong-Sheng Cao (",
                 year,
                 "). protr: Generating Various Numerical Representation Schemes of Protein Sequence.",
                 vers, ".", sep = ""))
