Bibliography
Bibliographic information can be ask by pgfisperner@ibai-publishing.org from dnb. The paper are and will be inexed life time asap. Thanks to German Science Foudation dfg-mitteilung-2020-06-20028-7574931-5819520.
Bibliographic information can be ask by pgfisperner@ibai-publishing.org from dnb. The paper are and will be inexed life time asap. Thanks to German Science Foudation dfg-mitteilung-2020-06-20028-7574931-5819520.