DOI10.1007/BF01461154zbMath42.0416.02WikidataQ90656872 ScholiaQ90656872MaRDI QIDQ1483526
L. E. J. Brouwer
Publication date: 1911 Published in: Mathematische Annalen (Search for Journal in Brave) Full work available at URL: https://eudml.org/doc/158491
