The penalties and remedies for failure to give adequate notice of a special meeting are the same as those for a regular meeting, i.e., injunctive relief, voiding of action taken, and fines. N.J.S.A. 10:4-15, 16 and 17. Where no valid emergency exists, or where there is not even an attempt to comply with the notice requirements for an emergency meeting, the same penalties may be imposed. See Dunn v. Mayor and Council and Clerk of Laurel Springs, 163 N.J. Super. 32, 394 A.2d 145 (App. Div. 1978).