#' Krackhardt friends
#'
#' Friendship network of the relations measured for Krackhardt's high-tech managers.
#'
#' @format A 21 x 21 directed matrix of the managers
#'
#' @source Wasserman, S. and Faust, K. (1994). Social network analysis: Methods and applications. Cambridge University Press.
#'
#' @usage data(krackhardt_friends)
#'
#' @docType data
#'
"krackhardt_friends"
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