Citation
If you publish research that uses lfmm you have to cite it as follows:
Frichot, E., Schoville, S. D., Bouchard, G., & François, O. (2013). Testing for associations between loci and environmental gradients using latent factor mixed models. Molecular Biology and Evolution, 30(7), 1687–1699. https://doi.org/10.1093/molbev/mst063