Lineare zweidimensionale Räume von stetigen Funktionen mit stetigen ersten Ableitungen
Accompanying spaces to a linear two-dimensional space of continuous functions with a continuous first derivative
On phases of accompanying spaces to a linear two-dimensional space of functions with a continuous first derivative
On some properties of functions relative to the classes of certain factor spaces
Central projections of a pair of accompanying spaces to a linear two-dimensional space of functions with a continuous first derivative
Einige Bemerkungen über die Nullstellen im zweidimensionalen Raum stetiger Funktionen
Einige Bemerkungen über Nullpunkte im bestimmten dreidimensionalen Raume stetiger Funktionen
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