Nyorai kupfuurira kweiyi ndima - Kunyange zvazvo kazhinji ari mudzimai womumba, Sidonia pane dzimwe nguva anoita mabasa. Mu "De Zwarte Zwaan" ("The Black Swan") (1958) iye mutungamiri panguva yeBrussels World's Fair muna 1958
. Mu "Beminde Barabas" ("Barabasi Anodiwa") (1974-1975) anoshanda semupombi.