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Koopmans, C.C., Smits, T., Ubbels, B.J., and van der Voort, J.

Ubbels, B.J., Wiegmans, B.W., Walderveen, T., Spatial Economics, and AMBER

Nijkamp, P., Ubbels, B.J., and Spatial Economics

Ubbels, B.J., Rodenburg, C.A., Nijkamp, P., Spatial Economics, and AMBER

Ubbels, B.J., Verhoef, E.T., and Spatial Economics

Ubbels, B.J., Tillema, T., Verhoef, E.T., van Wee, G.P., Bliemer, M., Steg, L., van Wee, B., and Spatial Economics

Schuitema, G., Ubbels, B.J., Steg, L., Verhoef, E.T., Bliemer, M., van Wee, G.P., and Spatial Economics

Ubbels, B.J., Verhoef, E.T., Garling, T., Steg, L., and Spatial Economics

Ubbels, B.J., Verhoef, E.T., Martin, J.C., Reggiani, A., and Rietveld, P.

Ubbels, B.J., Verhoef, E.T., and Spatial Economics

Ubbels, B.J., Verhoef, ET, Nijkamp, Peter, and Spatial Economics

Ubbels, B.J., Verhoef, E.T., and Spatial Economics

Kruseman, G., van Hattum, A.G.M., Bruinsma, F.R., Ubbels, B.J., Environmental Economics, Chemistry and Biology, Spatial Economics, and Institute for Environmental Studies

Ubbels, B.J., Verhoef, E.T., de Rus, G., Martin, J.C., Campos, J., Betancor, O., Roman, C., Espino, R., and Spatial Economics

Nijkamp, P., Ubbels, B.J., Atzema, O., Rietveld, P., and Shefer, D.

Ubbels, B.J., Verhoef, E.T., and Spatial Economics

Ubbels, B.J., Verhoef, E.T., Rietveld, P., and Stough, R.

Ubbels, B.J., Verhoef, E.T., and Spatial Economics

Nijkamp, P., Verhoef, E.T., Ubbels, B.J., Rodenburg, C.A., Kim, T.J., Spatial Economics, and AMBER

Ubbels, B.J., Potter, S., Lane, B., Peeters, P., Parkhurst, G., and Spatial Economics

Ubbels, B.J. and Spatial Economics

Ubbels, B.J., Verhoef, E.T., and Spatial Economics

Nijkamp, P., Ubbels, B.J., Verhoef, E.T., Hensher, D., Button, K.J., and Spatial Economics

Ubbels, B.J., Bruinsma, F.R., and Koetse, M.J.J.

Ubbels, B.J., Verhoef, E.T., and Spatial Economics

Ubbels, B.J., Wiegmans, B.W., Rietveld, P., Nijkamp, P., Spatial Economics, and AMBER

Ubbels, B.J. and Spatial Economics

Bruinsma, F.R., Mouwen, A., van der Lely, A.J., de Jong, R., Rietveld, P., Ubbels, B.J., and Rodenburg, C.A.

Rietveld, P., Peeters, P., Ubbels, B.J., Bruinsma, F., van Dijk, J., and Gorter, C.

Wiegmans, B.W., Ubbels, B.J., Rietveld, P., Nijkamp, P., AMBER, and Spatial Economics

Nijkamp, P., Rodenburg, C.A., Ubbels, B.J., Veen-Groot, D.B., Spatial Economics, and AMBER

Vreeker, R., Bruinsma, F.R., van Gent, H.A., Ubbels, B.J., and Spatial Economics

Ubbels, B.J., van Delft, H.T., Nijkamp, P., and Veen-Groot, D.B.

van Gent, H.A., Bruinsma, F.R., Ubbels, B.J., and Vreeker, R.

Ubbels, B.J., Rodenburg, C.A., Nijkamp, P., Spatial Economics, and AMBER

Ubbels, B.J., Bruinsma, F.R., Boekema, F., Kuijpers, E., and Spatial Economics

Rodenburg, C.A., Ubbels, B.J., Nijkamp, P., Columbus, F., AMBER, and Spatial Economics

Bruinsma, F.R., Rietveld, P., van Delft, H.T., Ubbels, B.J., Spatial Economics, and AMBER

Rodenburg, C.A., Ubbels, B.J., Nijkamp, P., AMBER, and Spatial Economics

Vreeker, R., Bruinsma, F.R., Nijkamp, P., Ubbels, B.J., Boekema, F., and de Graaff, W.

Rodenburg, C.A., Ubbels, B.J., Nijkamp, P., AMBER, and Spatial Economics

Rodenburg, C.A., Ubbels, B.J., Nijkamp, P., AMBER, and Spatial Economics

Ubbels, B.J., Peeters, P., Rietveld, P., and Spatial Economics

Rodenburg, C.A., Ubbels, B.J., Nijkamp, P., AMBER, and Spatial Economics

Ubbels, B.J. and Faber, O.

Ubbels, B.J., Rodenburg, C.A., Nijkamp, P., Spatial Economics, and AMBER

Rodenburg, C.A., Ubbels, B.J., and Nijkamp, P.

Peeters, P., Ubbels, B.J., Rietveld, P., and CVS, CVS

Bruinsma, F.R., van Delft, H.T., Gorter, C., de Graaff, T., Rietveld, P., Rodenburg, C.A., and Ubbels, B.J.

Bruinsma, F.R. and Ubbels, B.J.