@article{AlonsoCastroHauserKoutschan18,
 author = {Mariemi E. Alonso and Francisco J. Castro-Jim\'{e}nez and Herwig Hauser and Christoph Koutschan},
 title = {Echelons of power series and {G}abrielov's counterexample to nested linear {A}rtin approximation},
 journal = {Bulletin of the London Mathematical Society},
 isbn_issn = {ISSN 0024-6093},
 year = {2018},
 doi = {10.1112/blms.12162},
 note = {To appear (preprint on arXiv:1804.08160)},
}