@article{DOCMA_2021__26__a17,
     author = {Woess, Wolfgang},
     title = {Ratio limits and {Martin} boundary},
     journal = {Documenta mathematica},
     pages = {1501--1528},
     publisher = {mathdoc},
     volume = {26},
     year = {2021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2021__26__a17/}
}