@article{mcharris_2005, title={Nonlinearities in quantum mechanics}, volume={35}, ISSN={0103-9733}, url={https://doi.org/10.1590/S0103-97332005000300003}, DOI={10.1590/S0103-97332005000300003}, number={2b}, journal={Brazilian Journal of Physics}, publisher={Sociedade Brasileira de Física}, author={McHarris, Wm. C.}, year={2005}, month={June}, pages={380–384} }