As I've looked around the internet at reactions to Athanasius' magnum opus On the Incarnation, I've seen some accusations of latent Apollinarism. The work was published before the Apollinarian heresy was formally defined and condemned, but they say that it was materially there in his writings. That's just background, it's not what my question is about. You need not defend his orthodoxy to me.
Before the heresy was condemned at the ecumenical First Council of Constantinople, it was condemned at a local council in Alexandria headed by none other than Athanasius. So clearly Athanasius was as opposed to this heresy as he had famously been opposed to Arianism. But are there any surviving writings I can read where he lays out the case against Apollinarism?