@Article{fr-3-181-2000,
AUTHOR = {Unwin, D. M. and L\"u, J. and Bakhurina, N. N.},
TITLE = {On the systematic and stratigraphic significance of pterosaurs from the Lower Cretaceous Yixian Formation (Jehol Group) of Liaoning, China},
JOURNAL = {Fossil Record},
VOLUME = {3},
YEAR = {2000},
NUMBER = {1},
PAGES = {181--206},
URL = {https://fr.copernicus.org/articles/3/181/2000/},
DOI = {10.1002/mmng.20000030109}
}