Mathematica has some basic LaTeX export possibilities built in. However, the LaTeX support is far from optimal and at times quite buggy.
I just came accross two issues: Missing support for `Subsuperscript`

and nonsensical `\left`

and `\right`

statements which
are inserted in connection with `Abs`

. I wrote a short python3 script as a workaround (together with Mathematica integration).

Mathematica version:

```
11.0.0 for Linux x86 (64-bit) (July 28, 2016
```

Minimal example for the bugs:

The workaround comes as a python3 script `texexpression.py`

, which either takes Mathematica generated LaTeX strings as an argument or
reads them from `stdin`

.

If `texexpression.py`

is in the same directory as your Mathematica file, it can also be called using the Mathematica wrapper fixLatexErrors.

Again the example from above:

As it should be.