  In this paper we initiate some investigations on MathSciNet database. For
many mathematicians this website is used on a regular basis, but surprisingly
except for the information provided by MathSciNet itself, there exist almost no
independent investigations or independent statistics on this database. This
current research has been triggered by a rumor: do international collaborations
increase the number of citations of an academic work in mathematics? We use
MathSciNet for providing some information about this rumor, and more generally
pave the way for further investigations on or with MathSciNet. Keywords:
MathSciNet, tree-based methods, international collaborations
