| Oriental-Style Synagogues in Austria-Hungary: Philosophy and Historical Significance. R Klein Ars Judaica: The Bar-Ilan Journal of Jewish Art 2, 2006 | 25 | 2006 |
| Synagogues in Hungary, 1782-1918: genealogy, typology and architectural significance= Zsinagógák Magyarországon, 1782-1918 R Klein, K Bódis, N Gaschler-Gyeviki, K Rácz Terc Ltd., 2017 | 17 | 2017 |
| Zsinagógák Magyarországon 1782-1918: fejlődéstörténet, tipológia és építészeti jelentőség R Klein TERC, 2011 | 12* | 2011 |
| Secession: un gout juif?–Art Nouveau buildings and the Jews in some Habsburg lands R Klein Jewish Studies at the CEU 5, 91-124, 2005 | 12 | 2005 |
| The Great Synagogue of Budapest R Klein Terc, 2008 | 11 | 2008 |
| Zsinagógák Magyarországon 1782–1918 R Klein TERC: Budapest, 2011 | 9 | 2011 |
| Metropolitan Jewish cemeteries of the 19th and 20th centuries in Central and Eastern Europe: a comparative study R Klein Michael Imhof Verlag, 2018 | 8 | 2018 |
| Ludwig van Beethoven R Klein Jugend und Volk, 1975 | 8 | 1975 |
| How to create a building typology?: Typological matrix for mapping 19th century synagogues R Klein Zbornik radova Građevinskog fakulteta, Subotica, 57-68, 2014 | 6 | 2014 |
| Judaizam, Einstein i moderna arhitektura R Klein Prostor: znanstveni časopis za arhitekturu i urbanizam 20 (2 (44)), 220-235, 2012 | 3 | 2012 |
| Budapest’s Jewish Cemeteries–a Short Survey of their Art, Architecture and historical Significance R Klein ICOMOS–Hefte des Deutschen Nationalkomitees 53, 105-111, 2011 | 3 | 2011 |
| Ludwig Forster's Dohany Tempel in Pest: Moorish Cathedral for the" Asiates Of Europe"/Ludwig Forsterov Dohany Tempel u Pesti: Maurska katedrala za" Azijate Europe" R Klein Prostor 17 (2), 213-227, 2009 | 3 | 2009 |
| Budapest’s 13th District: the Modernist Jewish Quarter (1928-1944); An Urban Historical and Architectural Study R Klein Studia Hebraica, 40-59, 2009 | 3 | 2009 |
| A Dohány utcai zsinagóga R Klein Terc, 2008 | 3 | 2008 |
| A szecesszió: un gou’t juif? R Klein Múlt és jövő, 5-33, 2008 | 3 | 2008 |
| The Synagogue in Subotica R Klein Grafoprodukt, 2003 | 3 | 2003 |
| Kortárs magyar építészeti kalauz R Klein, É Lampel, M Lampel, IA Bojár Vertigo, 2001 | 3 | 2001 |
| Meaning and Transformation of Ashkenazyc Synagogue Architecture R Klein Jewish studies in a new Europe, 433-451, 1998 | 3 | 1998 |
| Humor in Architecture: Jewish Wit on Béla Lajta's Buildings R Klein Ars Judaica The Bar Ilan Journal of Jewish Art 12, 93-110, 2016 | 1 | 2016 |
| Peter Eisenman: a dekonstruktivizmustól a foldingig G Kunszt, R Klein Akademiai Kiads, 1999 | 1 | 1999 |
