@article{Keppens:7440,
      author        = "Keppens, Willem and De Cock, Mieke and Van Dooren, Wim and
                       Van Winckel, Hans and Sermeus, Jan",
      title         = "{Probing students’ estimates of astronomical sizes and
                       distances.}",
      month         = "Aug",
      year          = "2024",
}