@article{1365742,
      recid = {1365742},
      author = {Yu, Ching-Chau,},
      title = {Nonlinear eigenvalues and analytic-hypoellipticity /},
      pages = {1 online resource (106 pages).},
      note = {"July 1998, volume 134, number 636 (second of 6  numbers)."},
      url = {http://library.usi.edu/record/1365742},
}