Pavel Calabek:
Higher-order differential systems and a regularization operator
Zoltan Buczolich, Clifford E. Weil:
The non-coincidence of ordinary and Peano derivatives
G. Thompson:
Killing's equations in dimension two and
systems of finite type
Diana Caponetti, Valeria Marraffa:
A descriptive definition of a BV integral
in the real line
Stefan Schwabik:
Linear Stieltjes integral equations in Banach spaces