Haeusler, Edward Hermann.

Advances in natural deduction = a celebration in Dag Prawitz's work / by: Pereira, Luiz Carlos.; Haeusler, Edward Hermann.; de Paiva, Valeria.; SpringerLink (Online service) (Electronic resources)

The theory of plane area at the crossroads = philosophical, historical, and logical perspectives / by: Giovannini, Eduardo N.; Haeusler, Edward Hermann.; Lassalle Casanave, Abel.; SpringerLink (Online service) (Electronic resources)