Do you needs analogies from the Balkans, or functional analogies from elsewhere? For the Balkans the best is to ask Stefan Chokhadzhiev (he is at Facebook and academia.edu). He may have some finds from Slatino or Hotnitsa, unpublished.
I am not sure for support nur, some rectangular shaped pots found in Fikirtepe near İstanbul. You should look at Fikirtepe culture which seems in Marmara Region/ Turkish Thrace dated Neolithic Period. You may read the articles of prof.Mehmet Özdoğan.
I hope you will find which you searched at the below.
Özdoğan, M. 1983“Pendik: A Neolithic Site of Fikirtepe Culture in the Marmara Region”, R. M. Boehmer ve H. Hauptmann (yay.) Beiträge zur Altertumskunde Kleisasien, Festschrift für Kurt Bittel: 401-411. Verlag Philipp von Zabern, Mainz.
Özdoğan, M. 1989“Neolithic Cultures of Northwestern Turkey”, S. Bökönyi (yay.) Neolithic of Southeastern Europe and its Near Eastern Connections: 201-215. Varia Archaeologica Hungarica II, Budapest.
Özdoğan, M., Y. Miyake ve N. Özbaşaran-Dede 1991“An Interim Report on the Excavations at Yarımburgaz and Toptepe in Eastern Thrace”, Anatolica XVII: 59-121.
Özdoğan, M. 1996“Tarihöncesi Çağlarda İstanbul/ İstanbul during Prehistoric Periods”, M. Beykan (yay.), İstanbul, World City: 88-101. HABİTAT II, Türkiye Ekonomik ve Toplumsal Tarih Vakfı, İstanbul. written in turkish
Özdoğan, M. 1999“Northwestern Turkey: Neolithic Cultures in Between the Balkans and Anatolia”, M. Özdoğan ve N. Başgelen (yay.) Neolithic in Turkey: 203-224. Arkeoloji ve Sanat Yayınları, İstanbul.
Özdoğan, M. 2000“The Appearance of Early Neolithic Cultures in Northwestern Turkey. Some Problems”, S. Hiller ve V. Nikolov (yay.) Karanovo III Beiträge zum Neolithikum in Südosteuropa: 165-170. Phoibos Verlag, Wien.
Özdoğan, M. 2003“The Prehistory of Northwestern Turkey”, D. V. Grammenos (yay.) Recent Research in the Prehistory of the Balkans: 329-368. Archaeological Institute of Northern Greece and the Archaeological Receipts Fund, Thessaloniki.
Özdoğan, M. 2004“The Fourth Millennium in Eastern Thrace: an Archaeological Enigma”, B. Hänsel ve E.Studeniková (yay.) Zwischen Karpaten und Ägäis. Neolithikum und Ältere Bronzezeit: 19-26. Verlag Marie Leidorf GmbH, Rahden.
Özdoğan, M. 2011“Eastern Thrace: The Contact Zone between Anatolia and the Balkans”, S. R. Steadman ve G. McMahon (yay.) The Oxford Handbook of Ancient Anatolia (10,000-323 B.C.E.): 657-682. Oxford University Press, New York.