Periodic Boehmians. Nemzer, Dennis (1989) International Journal of Mathematics and Mathematical Sciences
Power Series Spaces and Weighted Solution Spaces of Partial Differential Equations. Michael Langenbruch (1987) Mathematische Zeitschrift
Propagation of Singularities and Related Problems of Solidification V. G. Danilov, G. A. Omel'yanov (1997) Matematički Vesnik
Propriétés locales d'espaces de type Sobolev en dimension infinie Bernard Lascar (1974/1975) Séminaire Paul Krée