1. J Citat Rep. Available at: https://jcr.incites.thomsonreuters.com/.
2. Impact factor 0.562 – the ultimate goal or the next step forward?;Morais;Rev Port Pneumol,2013
3. Impact factor 0.85 – the ultimate goal or the next step forward? (II);Morais;Rev Port Pneumol,2014
4. Impact factor 1.16 – the big challenge and the great opportunity;Morais;Rev Port Pneumol,2015
5. Impact Factor 1.35 Once again; what should and could we do about it?;Morais;Rev Port Pneumol,2016