RT Journal Article ID 356812f176980db2 A1 Yatsuk, L. P. T1 X-shaped Slot Cut in a Waveguide With Reflecting Termination JF Telecommunications and Radio Engineering JO TRE YR 1998 FD 1998-02-10 VO 52 IS 2 SP 89 OP 92 AB PB Begell House LK https://www.dl.begellhouse.com/journals/0632a9d54950b268,6b678762439b78a9,356812f176980db2.html