@article{a8528ae0074a4c6aa32a5df613e3987c,
title = "Radiographic osteoarthritis of the knee classified by the Ahlb{\"a}ck and Kellgren \& Lawrence systems for the tibiofemoral joint in people aged 35–54 years with chronic knee pain.",
author = "Petersson, \{Ingemar F\} and Torsten Boeg{\aa}rd and Tore Saxne and AJ Silman and Bj{\"o}rn Svensson",
year = "1997",
doi = "10.1136/ard.56.8.493",
language = "English",
volume = "56",
pages = "493--496",
journal = "Annals of the Rheumatic Diseases",
issn = "1468-2060",
publisher = "BMJ Publishing Group",
number = "8",
}