Around 1968 [dataset] by Gildea, R, Jimenez-Aguado, L, von der Goltz, A, Warrin, AE, Reynolds, C, Apor, P, Mark, J, Furst, J, Cerna, M, Townson, N, Osęka, P, Clifford, R, Voglis, P, Jóhannesson, G, Davis, J