def matplotlib_links():
    """ Display links to matplotlib documentation and references.
    """
    from IPython.display import display, Markdown
    import sys
    txt = """
    **Matplotlib References**
    - [Comprehensive Matplotlib OOP vs plt Blog Post](https://dev.to/skotaro/artist-in-matplotlib---something-i-wanted-to-know-before-spending-tremendous-hours-on-googling-how-tos--31oo)
    - [Markers](https://matplotlib.org/3.1.1/api/markers_api.html)
    - [Colors](https://matplotlib.org/3.1.0/gallery/color/named_colors.html )
    - [Text](https://matplotlib.org/3.1.0/tutorials/text/text_intro.html )
    - [Text Properties](https://matplotlib.org/3.1.1/tutorials/text/text_props.html)
    """
    if 'google.colab' in sys.modules:
        print(txt)
    else:
        display(Markdown(txt))
