Holst N, Lang A, Lövei G, Otto M (2013). Increased mortality is predicted of Inachis io larvae caused by Bt-maize pollen in European farmland. Ecological Modelling 250: 126-133.
Holst N (2013). A universal simulator for ecological models. Ecological Informatics 13: 70-76.
Ozturk I, Holst N, Ottosen C (2012). Simulation of leaf photosynthesis of C3 plants under fluctuating light and different temperatures. Acta Physiologiae Plantarum, DOI 10.1007/s11738-012-1033-8.
Holst N and Belete GF (2015). Domain-specific languages for ecological modelling. Ecological Informatics 27: 26-38.
Holst N (2010). WeedML: a tool for collaborative weed demographic modeling. Weed Science 58: 487-502.
Bibliography from Holst N, Rasmussen IA, Bastiaans L (2007). Field weed population dynamics: a review of model approaches and applications. Weed Research 47: 1-14.
Download: Weed models bibliography
If you are new to C++, maybe even to programming as such, I recommend "C++ Without Fear" by Brian Overland.
The only book I know that will introduce you to the latest version of Qt Creator is "Application Development with Qt Creator" by Ray Rischpater. This small book is surprisingly packed with information, both for new and experienced Qt Creator users.
You definitely need a good R textbook. I recommend "R for Everyone" by Jared Lander.