1. Guris, B. (2017) A New Nonlinear Unit Root Test with Fourier Function, MPRA Working Papers.

Güriş, B. (2018). A new nonlinear unit root test with Fourier function, Communications in Statistics-Simulation and Computation,  DOI: 10.1080/03610918.2018.1473591 Codes

2. Guris, B. (2017b) A Flexible Fourier Form Nonlinear Unit Root Test Based on ESTAR Model, MPRA Working Papers. Codes

3. Guris,S., Guris, B., (2019)  GLS Detrending in Nonlinear Unit Root Test, Communications in Statistics – Simulation and Computation, DOI:10.1080/03610918.2019.1662442