@conference{763136, author = {Dylan Williams and Bradley Alpert}, title = {Characteristic Impedance, Causality, and Microwave Circuit Theory}, year = {1999}, month = {1999-05-01 00:05:00}, publisher = {Proc., IEEE Sig. Propagation Interconnects Workshop, TITISEENEUSTADT, 1, GM}, url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=23423}, language = {en}, }