Franz BreisigFranz Breisig was a German mathematician, chiefly known for his work on quadripoles, later to be known as two-port networks.PublicationsBreisig, Dr F, Theoretische Telegraphie, Braunschweig, F. Vieweg und Sohn, 1910.PatentsBreisig, F, Method and Arrangement for Determining Crosstalk in Multicircuit Systems, US patent 492 034, filed 13 Aug 1921, issued 30 Jun 1925