Is it possible to tell
biblatex to never split a bibliography entry across two pages?
Ideally this should work for both
So you can do
and this will inhibit page breaks inside paragraphs.
More a kludge than a true automagic solution:
As BibTeX is a seperate executable that writes the LaTeX code that typesets the bibliography in a .bbl file, which then again is read into LaTeX in the next run, you can simply manually insert a
As BibTeX is not aware of the layout of the page the size of the fonts etc. it cannot decide where to insert such a
Of course you loose the manually inserted