Addendum à «R. G. McLenaghan : on the validity of Huygens' principle for second order partial differential equations with four independent variables. I»
Annales de l'I.H.P. Physique théorique (1977)
- Volume: 26, Issue: 3, page 323-323
- ISSN: 0246-0211
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top- [1] S. Helgason, Ann. Inst. Henri Poincaré, Vol. XXI, no. 4, 1974, p. 347. Zbl0304.35063MR369926