@article{eydeland_spruck_turkington_1990, 
  title={Multiconstrained Variational Problems of Nonlinear Eigenvalue Type: New Formulations and Algorithms}, 
  volume={55}, 
  DOI={10.2307/2008431}, 
  number={192}, 
  publisher={JSTOR}, 
  author={Eydeland and Spruck and Turkington}, 
  year={1990}
  }