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@BOOK{Das:643319,
      author       = {Das, Tapan Kumar},
      title        = {{Q}uantum {M}echanics: {A}dvanced {T}ools and
                      {A}pproximation {M}ethods},
      address      = {Singapore},
      publisher    = {Springer},
      reportid     = {PUBDB-2026-00125},
      isbn         = {9789819545452},
      pages        = {X, 428 pages : illustrations},
      year         = {2026},
      typ          = {PUB:(DE-HGF)3},
      url          = {https://bib-pubdb1.desy.de/record/643319},
}