Where to find galaxy mass function observational data?

[shadishacker]

Dear all,

I am looking for observational data for the number count of galaxy mass function:
\begin{equation} dn/dM\end{equation} in terms of redshift and also mass, to compare with theories.
I know that I can use HIPASS data (most probably), but as I am new to the field, I have to idea:
1- where to find the data
2- How to convert the observational data to dn/dM ?

 

[Megaquark]

Try https://scholar.google.com/

I googled "HIPASS data" and got a ton of results and articles.