(A)   Special meetings may be called by the Mayor or any three members of the Council upon at least 72 hours notice is given to each member of the Council. The notice must be delivered personally to each member or left at the member's usual place of residence with some responsible person.
   (B)   Special meetings may be held without notice when all members are present and take part in the meeting or consent in writing to hold such special meeting without other notice. The written consent must be filed with the City Clerk prior to the commencement of the meeting. A special meeting attended by all members is a regular meeting for the transaction of any business that may come before it.
('72 Code, § 100:78)