Σ or Σ2: that is the question
From MaRDI portal
Publication:4122685
DOI10.1007/BF02810151zbMath0352.62088MaRDI QIDQ4122685
Publication date: 1977
Published in: Blätter der DGVFM (Search for Journal in Brave)
Cites Work
This page was built for publication: Σ or Σ2: that is the question