Research into linguistic interference

3.  CLASSIFICATIONS AND RESEARCH INTO INTERFERENCE 
This chapter is dedicated to examples of concrete research studies into 
interference and some of the possible classifications of interference as stated in 
the papers of four different authors – Martin Thorovský, Christopher Hopkinson, 
Brenda Malkiel and Javier Franco Aixelá. All of these are dealing with 
interference in translations, either from L1 into L2 or vice versa. We will briefly 
introduce the research objective of each and, in cases where they present some 
type of classification, we will mention their division and provide several 
examples.