Beurling-Gevrey tempered ultradistributions as boundary values Pilipovic, Stevan (1991) Portugaliae mathematica
Boundary value representation for a class of Beurling ultradistributions Pilipovic, Stevan (1988) Portugaliae mathematica
Boundary values of ultra-distributions of exponential type Carmichael, D. Richard (1985/1986) Portugaliae mathematica