Vol-2018⫷ Vol-2019 ⫸Vol-2020
urn:nbn:de:0074-2019-0


Vol-2019/flexmde_1⫷Vol-2019/flexmde_2⫸Vol-2019/flexmde_3
Yentl Van TendelooHans Vangheluwe

Explicitly Modelling the Type/Instance Relation