@article{RO_2019__53_2_559_0,
     author = {Schroeder, Pascal and Kacem, Imed and Schmidt, G\"unter},
     title = {Optimal online algorithms for the portfolio selection problem, bi-directional trading and -search with interrelated prices},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {559--576},
     publisher = {EDP-Sciences},
     volume = {53},
     number = {2},
     year = {2019},
     doi = {10.1051/ro/2018064},
     zbl = {1430.91090},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/ro/2018064/}
}