Mishna Berura Page 100b - Chapter 197;1 to 197;2 Zimun with a latecomer | When the tenth ate vegatables not bread - Rabbi A Taback
SeferAhavasChese Ch.23-12 Shvat
Unlock the halachic mysteries behind each day's page of Mishna Berura
The importance of making a Zimun - Rabbi P Levin
Sources
sources 100b