It is however also notable that many of the aspects of this body of work were already published in 1914 by Gunnar Nordström, but his work also went unnoticed and was not recognized when the ideas re-emerged.
Zajímavé je, že mnohé z aspektů této práce zveřejnil již v roce 1914 Gunnar Nordström, ale jeho práce zůstala nepovšimnuta dokud nebyly stejné myšlenky později znovuobjeveny jinými.