I believe that the links containing "ezproxy.weizmann.ac.il" work only for people from the same institution. Related discussion on meta: Correcting links with university proxy (especially MathSciNet links) — Martin Sleziak Nov 26 '17 at 7:50

@MartinSleziak Thanks. I acknowledge your comment - putting those links was silly on my side. I will go and fix them once I have the spare time for that. — Uri Bader Nov 27 '17 at 13:02

@MartinSleziak, Later then I wished, I fixed those links. Thank you. — Uri Bader 2 mins ago

Thanks for doing that. I'd guess that after the update of links the last few comments (starting with my comment pointing out the proxy) are no longer needed. If you agree feel free to ping me either here or in chat and I will remove my comments. (Or you can flag my comments as no longer needed - which should lead to removal of the comments by a moderator.) — Martin Sleziak 13 secs ago