Mezue ahịrịokwu na-esonụ: Jansen meriri nke mbụ n'ime asọmpi mba Dutch atọ ya n'usoro n'oge 1977-78. Onye na-asọ mpi na asọmpi ISU ise, ọ gwụchara nke iri na asaa na 1978 Europeans na Strasbourg, France; nke iri na asatọ na 1978 Worlds na Ottawa, Ontario, Canada; nke iri abụọ na 1979 Europeans na Zagreb, Yugoslavia; nke iri abụọ na atọ na
1979 Worlds na Vienna, Austria; na 18th na 1980 Europeans na Gothenburg, Sweden.