Kammala jumla mai zuwa: Jan van Houwelingen (an haife shi a ranar 12 ga Janairu, 1955 a Heesselt, Gelderland) dan tseren keke ne mai ritaya daga Netherlands, wanda ya kasance mai tseren keke daga 1979 zuwa 1987. Babban ɗan'uwansa Adri (an haife shi a 1953) shi ma ƙwararren ɗan tseren keke ne a cikin 1980s. A shekara ta 1978, Van Houwelingen ya kasance memba na tawagar da ta lashe gasar tseren lokaci a gasar
Gasar Zakarun Duniya ta UCI ta 1978.