S.D. Codified Laws § 37-1-22 : — TRADE REGULATIONRESTRAINT OF TRADE, MONOPOLIES AND DISCRIMINATORY TRADE PRACTICES —1-22 - Judicial interpretations of similar statutes as guide TEXT PDF It is the intent of the Legislature that in construing this chapter, the courts may use as a guide interpretations given by the federal or state courts to comparable antitrust statutes. SDCL 37-1-22 SL 1977, ch 305, § 13.