  We consider fermions in phosphorene through double barriers and study the
corresponding Goos-H\"anchen (GH) shift. To accomplish this, we initially
compute the corresponding transmission amplitude by applying boundary
conditions. From the resulting transmission phase, we extract the GH shift. Our
findings reveal that the GH shift's magnitude is contingent upon the energy of
the incident electron and the barrier parameters. Additionally, we observe that
the GH shift changes sign at the transmission boundaries-specifically, at the
transmission resonances occurring immediately before and after the gap region,
where transmission is zero.
