@misc{kapitza_the_predictability_1989, 
author={Kapitza, H.},
title={The predictability of a chaotic system investigated with the adjoint method},
year={1989},
howpublished = {conference lecture: Norman, OK (USA); 06.-09.03.1989},
note = {Online available at: \url{} (DOI). Kapitza, H.: The predictability of a chaotic system investigated with the adjoint method. Second STORM Workshop on Regional Data Assimilation. Norman, OK (USA), 1989.}}