by Costa, M. G., Leite, J. M., Beckedorff, L., Spengler, A. W., de Paiva, K. V., Oliveira, J. L. G.
Published in Journal of the Brazilian Society of Mechanical Sciences and Engineering (01.11.2021)

by Ostrufka, A.L.A., Filho, E.M., Borba, A.C., Spengler, A.W., Possamai, T.S., Paiva, K.V.
Published in Acta astronautica (01.09.2019)

by Kürschner, V. N., Spengler, A. W., Paiva, K. V.
Published in Discover mechanical engineering (29.08.2024)

by SPENGLER, W A, VON WOLFFERSDORFF, H
Published in Das Deutsche Gesundheitswesen (16.12.1954)