@article{schmidt:1979:ms,
    author = {Schmidt, Dieter and Wolf, Gerhard},
     title = {A method of generating integral relations by the simultaneous
              separability of generalized {S}chr\"odinger equations},
   journal = {SIAM J. Math. Anal.},
  fjournal = {SIAM Journal on Mathematical Analysis},
    volume = {10},
      year = {1979},
    number = {4},
     pages = {823–838},
      issn = {0036-1410},
     coden = {SJMAAH},
   mrclass = {35C99 (33A99 34A99)},
  mrnumber = {MR0533954 (81c:35019)},
mrreviewer = {Ernest G. Kalnins},
       doi = {10.1137/0510078},
     zblno = {0411.35005}}