David Damanik, Benjamin Eichinger, Petro Yudytskiy,
"Szeg?'s theorem for canonical systems: the Arov gauge and a sum rule"
, in J. Spectr. Theory, Vol. 11, Nummer 3, Seite(n) 1255?1277, 2021
Original Titel:
Szeg?'s theorem for canonical systems: the Arov gauge and a sum rule