1. The Pliocene-Pleistocene Boundary;Aguirre;Episodes,1985
2. A study on the lower boundary of Quaternary in North China — stratigraphic significance of the Matuyama/Gauss Boundary;An,1984
3. The fifth layer paleosol in the Lishi Loess and their Paleoclimatic significance;An;Acta Pedologica Sinica,1980
4. A climatostratigraphic subdivision of Late Pleistocene strata named by Malan formation in North China;An;Kexue Tongbao,1984
5. The illuviation ferri-argillans and their genetic inference;An;Kexue Tongbao,1978