add missing functions to docstring
@@ -67,12 +67,16 @@ Interpolation and Concatenation Along Frequency Axis
Network.interpolate
Network.interpolate_self
-Combining Networks
+
+Combining and Splitting Networks
===================================
.. autosummary::
:toctree: generated/
+ subnetwork
+
+ one_port_2_two_port
n_oneports_2_nport
four_oneports_2_twoport
three_twoports_2_threeport
