OK, this is the part relating to T. montandoni from Gillett, L., 1990. The Reptiles and Amphibians of Poland. British Herpetological Society Bulletin 31:36-38.
"Triturus montandoni/ Carpathian Newt/ Traszka karpacka
Mountains of the extreme south. In the south-east I have found this newt in great abundance, occupying every kind of fish-free water from woodland ponds to temporary puddles and the running water of small roadside ditches. In these places it was the only newt species but, in the relatively few places where it can be found alongside the Smooth Newt [T. vulgaris], hybrids can make up 60% of the population. Even in breeding condition, this species is characterized by a rough-feeling skin. An albino larva has grown to a size beyond that at which metamorphosis would normally take place and has over-wintered in this condition. (I am not aware of this phenomenon having previously been recorded for this species)"
He also lists two Polish books in the references:
Juszczyk, W., 1987. Plazy i gady krajowe. 3 volumes: 268, 432 and 240 pages. Panstwowe Wydawnictwo Naukowe, Warszawa.
Klynarski, M., 1987. Plazy i gady Polski. 80 pages. Wydawnictwa Szkolne i Pedagogiczne, Warszawa.