for example the critical mass was estimated to be residents in luxemburg and inhabitants in estonia per the recommendations that an administrative reform expert committee put forward in november but residents in norway per the ad hoc expert committee appointed by the government and residents in finland during the paras reform only for primary healthcare and related services compared with residents for vocational education for example in the case of finland the methodology used to identify an optimal threshold was criticised and the legislation was changed in to include more diverse criteria linguistic andor cultural particularities may also be taken into account eg in estonia finland greece iceland etc for example in the united states a wide variety of special districts as opposed to general purpose local governments provide a single public service or a set of related public services to the residents of a determined area