TY - CONF AU - William Stone C2 - 14th International Symposium, Pittsburgh, PA DA - 1997-06-08 LA - en PB - 14th International Symposium, Pittsburgh, PA PY - 1997 TI - Surveying Through Solid Walls UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=909362 ER -