added paper by torlo, oeffner, ranocha

Author: SKopecz

paper/paper.bib

@@ -168,3 +168,18 @@ @article {huang2019order2
        DOI = {10.1007/s10915-018-0852-1},
        URL = {https://doi.org/10.1007/s10915-018-0852-1},
 }
+
+@article {torlo2022,
+    AUTHOR = {Torlo, Davide and \"Offner, Philipp and Ranocha, Hendrik},
+     TITLE = {Issues with positivity-preserving {P}atankar-type schemes},
+   JOURNAL = {Appl. Numer. Math.},
+  FJOURNAL = {Applied Numerical Mathematics. An IMACS Journal},
+    VOLUME = {182},
+      YEAR = {2022},
+     PAGES = {117--147},
+      ISSN = {0168-9274,1873-5460},
+   MRCLASS = {65L06 (65L04)},
+  MRNUMBER = {4469089},
+       DOI = {10.1016/j.apnum.2022.07.014},
+       URL = {https://doi.org/10.1016/j.apnum.2022.07.014},
+}