module: mutual_inductors
description: 
parameters:  double l1, double l2
             double m
inputs:  double t1, double ref_t1
outputs:  double t2, double ref_t2
electrical_element:  
mutual_inductors t2 ref_t2 t1 ref_t1 inductance1=l1 inductance2=l2 mutual_inductance=m
