OK, I have just read the paper. It is very short and available free via the Societe Herpetologique de France;
SHF :: Anciens numéros du Bulletin
The section on the eggs says that the first time he reproduced this species, the female ate a large number of them. When he removed a group of eggs and kept them in a separate tank with a paump moving water over them, they were overcome by fungus. He doesn't know if this group was fertile, though, so it's not clear whether the mother plays a role in protecting them against pathogens.
The second time, the female was a better mother and guarded the eggs very well and very aggressively.
Eggs were laid on the 27th May and the first larva was discovered on the 6th August. The larvae take two weeks (or just less) to use up their yolk sack (at aroun 18C water temperature). They are very slow growing; 22mm at hatching and less than 60mm 13 months later (with winter cooling down to 12C)! Its not clear if he left them with the adults...I suspect not, given how voracious this species is.
I hope that helps, sorry tis a summary rather than direct translation, but those are all the important details.
