abstract = "Objective: The aim of this paper is to analyse the
main research areas in Genetic Programming (GP).
Method: We used the systematic literature review method
employing an automatic search with manual refining of
papers published on GP between 1992 to 2012. Results:
Just 63 studies meet all the requirements of the
inclusion criteria. Conclusion: Although studies
relating to the application of genetic programming in
the forecast of time series were frequently presented,
we find that the studies proposing changes in the
original algorithm of GP with a theoretical support and
a systematic procedure for the construction of model
were scarce in the time 1992-2012.",