Anna Miodek; Paweł Szemraj; Józef Kocur; Anna Ryś (2007). "Depresja maskowana – historia i współczesność" [Masked Depression – History and Present Days] (PDF). Pol. Merk. Lek. (in Polish). XXIII (133). MEDPRESS: 78–80. ISSN1426-9686. Retrieved 2013-01-04. The paper is accompanied with an abstract in English.
Anna Miodek; Paweł Szemraj; Józef Kocur; Anna Ryś (2007). "Depresja maskowana – historia i współczesność" [Masked Depression – History and Present Days] (PDF). Pol. Merk. Lek. (in Polish). XXIII (133). MEDPRESS: 78–80. ISSN1426-9686. Retrieved 2013-01-04. The paper is accompanied with an abstract in English.