1. Almeida LMA, Rigolin TB (2002) Geografia. Ática, São Paulo
2. Ávila AFD, Rodrigues GS, Vedovoto GL (2008) Evaluation of the impacts of technologies generated by Embrapa: reference methodology. Embrapa Informação Tecnológica, Brasília (DF)
3. Bacaxixi P, Bueno CEMS, Ricardo HÁ, Epiphanio PD, Silva DP, Barros BMC, Silva TF, Bosquê GG, Lima FCC (2011) The importance of beekeeping in Brazil. Rev Cient Eletr Agro 20:34−56
4. Barreto HFM, Soares JPG, Morais DAEF, Silva ACC, Salman AKD (2010) Environmental impacts of the agro-ecological management of the caatinga in Rio Grande do Norte. Pesq Agrop Brasileira 45:1073–1081
5. Barros AIRNA, Nunes FHFM, Costa MMF (2009) Manual of good practices in the production of beeswax: general principles. Portugal: Fnap