Sommaire du Fascicule no. 1

Contents
Ein Beitrag zur Theorie der zylindrischen Luftspalte in einem Reaktor
p. 3-9
Photochemical changes of chlorophyll $\alpha$ as reflected in absorption spectra
p. 11-24
Regular mappings of groupoids
p. 25-37
T-quasigroups (Part I.)
p. 39-49
Functions satisfying an integral Lipschitz condition
p. 51-54
Lattice socles and radicals described by a Galois connnection
p. 55-63
A note on the spectrum of Comet Kohoutek 1970 III
Observations of comets and asteroids at the Kleť Observatory in the year 1970
p. 67-78

Sommaire du Fascicule no. 2

Contents
Trajectories and natural numbers
p. 3-20
Pseudoriemannsche Metriken mit Anwendungen
p. 21-29
T-quasigroups (Part II.)
p. 31-49