Hearts have asked the Scottish Football Association for a formal explanation for the performance of the officials in their controversial SPL defeat at Hamilton.
Manager Csaba Laszlo has written to the SFA expressing his "serious concern'' about the performance of referee David Somers and his assistants at New Douglas Park on Sunday.
Laszlo said: "Clearly, I try as much as possible to be fair with my comments regarding referees and, if you look back at my time since becoming Hearts manager, you will see I am actually very positive in my comments where I can be.
"However, it is clear to me that I share the views of a number of other managers who genuinely believe that the standard of officiating is one of the biggest challenges the game in Scotland faces.''
Hearts are particularly upset with the dismissals of captain Michael Stewart and defender Ismael Bouzid, as well as Somers' decision not to award them a penalty in injury time in a game they lost 2-1.
Stewart was today set to have the red card he was shown for tangling with Accies captain Alex Neil rescinded by a Scottish Football Association review panel.
After reviewing footage of the incident, Somers admitted he was not happy with his decision to dismiss the midfielder. Bouzid was sent off for two yellow cards, for which Hearts have no right of appeal.
Sunday's on-field incidents were overshadowed by the post-match mayhem which saw Somers issue a further four red cards. Hearts winger Suso Santana and Hamilton striker Leon Knight were both punished for violent conduct, the pair's clash sparking a mass brawl in the tunnel.
Jambos midfielder Ian Black was dismissed for insulting and abusive behaviour, while a red card was also shown to masseur Alan Robson. Hearts fined both Suso and Black for their part in the chaos, as well as defender Eggert Jonsson, who was yellow-carded post match.
Laszlo called for referees to take responsibility for their decisions, and claims the post-match brawl could could have been avoided if the referee had made the correct decisions during the 90 minutes.
"This is what I want, to have a rule for responsibility," he said. "Responsibility must be from both sides. It's not correct for decisions that you make, you don't take any responsibility. If you can say sorry, this shows that you have a good personality.''