Follow this link for the Teshuvot
The letter from Rav Goren is particularly interesting as it mentions the shaving issue in connection with larger discussion of how a mourner should behave with regards to Yom Ha'atzmaut. It also deals with the issue of what do do in the diaspora when Yom Ha'atzmaut is celebrated earlier becasue 5 Iyar falls on Shabbat or Friday. I think that most America communities do not follow Rav Goren on this one.

