Very good publications were written by Leoš Šatava, however, as I know, they are written in Czech language only. But it cannot be a problem for the Polish scholars :)

https://www.academia.edu/5917713/N%C3%A1ndor_B%C3%A1rdi_Csilla_Fedinec_L%C3%A1szl%C3%B3_Szarka_eds._Minority_Hungarian_Communities_in_the_XXth_Century._New_York_2011._full_text_

https://www.academia.edu/4887260/Martin_Pek%C3%A1r_et_al._Ethnic_minorities_in_Slovakia_in_the_years_1918-1945._A_survey

w sumie wszystko zalezy od tego, czy Pani szuka jakis ogolny tekst czy tez chodi o jakies konkretne pytania nt. mniejszosci narodowych w regionie.

Hi

I recommend:

http://www.ecmi.de/

tovemalloy.com/

Tove H. Malloy Minority Issues in Europe: Rights, Concepts, Policy 

Malloy, Tove H. 2005. National minority “regions” in the enlarged European Union: Mobilizing for third level politics? (http://www.ecmi.de/uploads/tx_lfpubdb/working_paper_24.pdf)

Dear Katarzyna,

Please, look to Mykolas Romeris university's works in Lithuania a year ago, for example:

Lietuvos lenkų tautinės mažumos identiteto tyrimas / Badania dot. tożsamości polskiej mniejszości narodowej na Litwie

Gediminas Kazėnas , Adas Jakubauskas, Inga Gaižauskaitė, Romualdas Kacevičius, Asta Visockaitė: Mykolas Romeris University, ISBN: 978-9955-19-674-7

Arvydas Guogis

http://pan-pl.academia.edu/NicoleDo%C5%82owy

https://www.researchgate.net/profile/Tomasz_Wicherkiewicz

Dear Katarzyna,

Please, look to Gediminas Kazėnas publications in ResearchGate, for example:

https://www.researchgate.net/publication/249993809_Stosunki_polsko-litewskie_w_kontekcie_Karty_Polaka

Arvydas

Article Stosunki polsko-litewskie w kontekście Karty Polaka

Thanks a lot!!!

Hi, Katarzyna Lesniewska:

Maybe you have already accessed it. However, I've just read this book chapter and then realised you asked for such information some weeks before, thus it could be useful:

Markusse, J.D. (2010): "National Minorities in European Border Regions", in Wastl-Walter, D. (ed.): The Ashgate Research Companion to Border Studies. Aldershot: Ashgate. pp. 351-371.

Kind regards,

Valerià

I primarily recommended in my perception two valuable publication which definitely enlarge your intellectual horizon to tackle the issue.

Minority Rights in Central and Eastern Europe BASEES/Routledge series on Russian and East European studies Series editor: Richard Sakwa Department of Politics and International Relations, University of Kent First published by Routledge 2009

Minority Integration in Central Eastern Europe Between Ethnic Diversity and Equality Edited and introduced by Timofey Agarin and Malte Brosig Amsterdam - New York, NY 2009

Please, find attached files.

With best regards,

Karlo Godoladze

http://www.amazon.com/Minorities-Inter-State-Relations-Francesco-Sabanadze/dp/9004175989/ref=sr_1_1?s=books&ie=UTF8&qid=1448018459&sr=1-1&refinements=p_27%3AEdited+by+Francesco+Palermo+and+Natalie+Sabanadze

Vojislav Stanovčić (ed.), Položaj nacionalnih manjina u Srbiji (Belgrade, 2007)

Hanna Liberska and Marzanna Farnicka, Marzanna (eds), Child of Many Worlds: Focus on the Problem of Ethnic Minorities (Frankfurt-M., 2014)

Olga Alekseeva and Hans-Georg Heinrich,Ethnic Minorities of Central and Eastern Europe in the Internet Space (Frankfurt-M., 2013) 

The following bibliographies and older works may also be useful, esp. for historical background: 

Margit Feischmidt (ed.), Ethnic Relations in Eastern Europe: A selected and annotated bibliography (Budapest: 2001) - a newer version may be available online.

Raymond Pearson, National Minorities in Eastern Europe 1848-1945 (London, 1983)

Elemer Bako and William Solyom-Fekete (eds), Hungarians in Rumania and Transylvania: A bibliographical list of publications in Hungarian and West European languages compiled from the holdings of the Library of Congress (Washington, 1969)

Ferenc Eiler, Dagmar Hájková et al., Czech and Hungarian Minority Policy in Central Europe 1918-1938 (Prague and Budapest, 2009)

Gheorghe Iancu (ed.), Ethnic Minorities from Romania in Documents from the Nations' Society / Problema minoritatilor etnice din Romania in documente ale Societatee Natiunilor 1923-1932 (Cluj-Napoca, 2002)

 Despite the title, this also has something on current affairs:

http://www.doiserbia.nb.rs/img/doi/0350-7653/2011/0350-76531142077W.pdf

Hi Katarzyna ,

I am sending herewith some details of good publication that related to  national minorities in Eastern and Central Europe. I think it will be useful for your need

Brubaker, R. (1995). National minorities, nationalizing states, and external national homelands in the new Europe. Daedalus, 107-132.

Rothschild, J. (2017). East Central Europe between the two world wars. University of Washington Press.

Mudde, C. (2005). Racist extremism in central and eastern Europe. East European Politics & Societies, 19(2), 161-184.

Brusis, M. (2002). Between EU requirements, competitive politics, and national traditions: re–creating regions in the accession countries of central and eastern Europe. Governance, 15(4), 531-559.

Mandelbaum, M. (2000). The new European diasporas: national minorities and conflict in Eastern Europe.

This may be of some interest for you, although it's actually about ethnic minorities in terms of the Polish minority law.

Article ODRĘBNOŚĆ JĘZYKOWA MAŁYCH GRUP ETNICZNYCH I JEJ ROLA W PROCE...