8Fernando Serrano,“The Role of the Tax Ombudsman in Taxpayer Protection",in Protection of Taxpayer's Rights:European,International And Domestic Tax Law Perspective,Wlodzimierz Nykiel & Malgorzata S? k,eds.,Wolters Kluwer,2009.
9Kristiina Aima,“A European Tax Ombudsman?”,in Legal Remedies in European Tax Law,Pasquale Pistone,ed.,IBFD,2009.