1. concorR::krack_advice
    Krackhardt High-Tech Managers data
    rda| rds
    igraph
  2. concorR::krack_friend
    Krackhardt High-Tech Managers data
    rda| rds
    igraph
  3. concorR::krack_report
    Krackhardt High-Tech Managers data
    rda| rds
    igraph