_:Be10afcef7f7dfdde90fa4f40a20c848f . "H." . "Ackermann" . "H. Ackermann" . . . . "Ackermann, H." . . _:Be10afcef7f7dfdde90fa4f40a20c848f . _:Be10afcef7f7dfdde90fa4f40a20c848f . _:Be10afcef7f7dfdde90fa4f40a20c848f "2023-05-20"^^ . _:Be10afcef7f7dfdde90fa4f40a20c848f . _:Be10afcef7f7dfdde90fa4f40a20c848f . _:Be10afcef7f7dfdde90fa4f40a20c848f "07307473X" . _:Be10afcef7f7dfdde90fa4f40a20c848f . _:Be10afcef7f7dfdde90fa4f40a20c848f . _:Be10afcef7f7dfdde90fa4f40a20c848f .