e-NOSE Response Classification of Sewage Odors by Neural Networks and Fuzzy Clustering. - Güleda Önkal-Engin; Ibrahim Demir; Seref Naci Engin (ICNC (2), 2005)

Determination of the relationship between sewage odour and BOD by neural networks. - Güleda Önkal-Engin; Ibrahim Demir; Seref Naci Engin (Environ. Model. Softw., 2005)

Modeling and Parameter Identification of a Jet-loop Bioreactor. - Seref Naci Engin; Fatma Yildiz; Mahir Ince; Güleda Önkal-Engin; Bülent Keskinler (ACC, 2007)