IPython notebook export external svg to pdf - pdf

Question

In a markdown cell in an ipython3 notebook (4.0.0) I include an svg that is located together with the notebook file:
<img src="NewTux.svg"/>
In the normal notebook view it is displayed as expected.
However, when I try to export to pdf the image does not show up.
What puzzles me is that a matplotlib plot (with %config InlineBackend.figure_format = 'svg') perfectly shows both on screen AND in the exported PDF.
How can I get a PDF including also the svgs which are not plotted but just included as a figure in markdown?
(A workaround is to print to pdf in browser, but then I miss LaTeX-formatting and formula and color in the syntax-highlighting of the code sections).
Minimum working example for the ipython file is:
{
"cells": [
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": false
},
"outputs": [],
"source": [
"%matplotlib inline\n",
"%config InlineBackend.figure_format = 'svg'\n",
"import numpy as np\n",
"import matplotlib.pyplot as pp\n",
"\n",
"x = np.arange(0,10,0.05)\n",
"y = np.sin(x)\n",
"\n",
"pp.plot(x,y)\n",
"pp.show()"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"<img src=\"NewTux.svg\">"
]
},
{
"cell_type": "code",
"execution_count": null,
"metadata": {
"collapsed": true
},
"outputs": [],
"source": []
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
"version": "3.4.3"
}
},
"nbformat": 4,
"nbformat_minor": 0
}
Where I downloaded: NewTux.svg from the Wikimedia commons.