https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763050517333&signature=4abf204b05a63a627193db7d10738c55&articleTitle=Sandstone+Landforms&articleAuthor=Robert+Young%2C+Ann+Young&publicationTitle=Sandstone+Landforms&language=&publicationType=1&publishYear=1992&isn=9783642765902&publisher=Springer+Berlin+Heidelberg