diff --git a/doc/source/algorithms/VLE.ipynb b/doc/source/algorithms/VLE.ipynb
index ce2b4475d06e05a842d7b2b313f0a55e738c4201..425c451889e6d220ff5f99322cff937618a6efcb 100644
--- a/doc/source/algorithms/VLE.ipynb
+++ b/doc/source/algorithms/VLE.ipynb
@@ -227,7 +227,7 @@
    "id": "63902dba",
    "metadata": {},
    "source": [
-    "The C++ implementation returns a string in JSON format, which can be conveniently operated upon, for instance after converting the returned data structure to a ``pandas.DataFrame``.  A simple example of plotting a subcritical isotherm for a ``boring`` mixture is presented here:"
+    "The C++ implementation returns a string in JSON format, which can be conveniently operated upon, for instance after converting the returned data structure to a ``pandas.DataFrame``.  A simple example of plotting a subcritical isotherm for a \"boring\" mixture is presented here:"
    ]
   },
   {
diff --git a/doc/source/models/cubics.ipynb b/doc/source/models/cubics.ipynb
index e5fec1f837ab7b9f6f1a3fc38e73fac47f438cd2..d9c6ee29c6a4cf06207b95ee529de2ae3460f449 100644
--- a/doc/source/models/cubics.ipynb
+++ b/doc/source/models/cubics.ipynb
@@ -120,7 +120,8 @@
    "outputs": [],
    "source": [
     "import numpy as np\n",
-    "modelPR.get_a(140, np.array([0.3, 0.4, 0.3])), modelPR.get_b(140, np.array([0.3, 0.4, 0.3]))"
+    "z = np.array([0.3, 0.4, 0.3])\n",
+    "modelPR.get_a(140, z), modelPR.get_b(140, z)"
    ]
   }
  ],