Vogl, Michael, Laurell, Pontus, Zhang, Hao, Okamoto, Satoshi, and Fiete, Gregory A. Resummation of the Holstein-Primakoff expansion and differential equation approach to operator square roots. Retrieved from https://par.nsf.gov/biblio/10284572. Physical Review Research 2.4 Web. doi:10.1103/PhysRevResearch.2.043243.

Vogl, Michael, Laurell, Pontus, Zhang, Hao, Okamoto, Satoshi, & Fiete, Gregory A. Resummation of the Holstein-Primakoff expansion and differential equation approach to operator square roots. Physical Review Research, 2 (4). Retrieved from https://par.nsf.gov/biblio/10284572. https://doi.org/10.1103/PhysRevResearch.2.043243

Vogl, Michael, Laurell, Pontus, Zhang, Hao, Okamoto, Satoshi, and Fiete, Gregory A. "Resummation of the Holstein-Primakoff expansion and differential equation approach to operator square roots". Physical Review Research 2 (4). Country unknown/Code not available. https://doi.org/10.1103/PhysRevResearch.2.043243. https://par.nsf.gov/biblio/10284572.

@article{osti_10284572,
place = {Country unknown/Code not available}, title = {Resummation of the Holstein-Primakoff expansion and differential equation approach to operator square roots}, url = {https://par.nsf.gov/biblio/10284572}, DOI = {10.1103/PhysRevResearch.2.043243}, abstractNote = {}, journal = {Physical Review Research}, volume = {2}, number = {4}, author = {Vogl, Michael and Laurell, Pontus and Zhang, Hao and Okamoto, Satoshi and Fiete, Gregory A.}, editor = {null} }