Marvan, Michal: On the horizontal cohomology with general coefficients.
(English).
In:
Bureš, J.
and Souček, V. (eds.): Proceedings of the Winter School "Geometry and Physics".
Circolo Matematico di Palermo, Palermo, 1990.
pp. [161]-170
Marvan, Michal:
On covarieties of coalgebras.
(English).Archivum Mathematicum,
vol. 21
(1985),
issue 1,
pp. 51-63