#' @references
#'
#' **Data originated from:**
#'
#' - Heller, J., & Wickelmaier, F. (2013).
#' Minimum discrepancy estimation in probabilistic knowledge structures.
#' Electronic Notes in Discrete Mathematics, 42, 49–56.
#' \doi{10.1016/j.endm.2013.05.145}
#'
#' **Data used in:**
#'
#' - Chen, Yinghan, Liu, Y., Culpepper, S. A., & Chen, Y. (2021).
#' Inferring the number of attributes for the exploratory DINA model.
#' Psychometrika, 86(1), 30–64. \doi{10.1007/s11336-021-09750-9}
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