On the Regularity of Graded $k$-Algebras of Krull Dimension $\leqq 1$.

Sjögren, R. (1992). On the Regularity of Graded $k$-Algebras of Krull Dimension $\leqq 1$. MATHEMATICA SCANDINAVICA, 71, 167–172. https://doi.org/10.7146/math.scand.a-12419