APA (7th ed.) Citation

Karlsen, H. A., & Tjøstheim, D. (1998). Nonparametric estimation in null recurrent time series.

Chicago Style (17th ed.) Citation

Karlsen, Hans Arnfinn, and Dag Tjøstheim. Nonparametric Estimation in Null Recurrent Time Series. Berlin, 1998.

MLA (9th ed.) Citation

Karlsen, Hans Arnfinn, and Dag Tjøstheim. Nonparametric Estimation in Null Recurrent Time Series. 1998.

Warning: These citations may not always be 100% accurate.