[§583-13] Recognition of out-of-state custody decrees. The courts of this State shall recognize and enforce an initial or modification decree of a court of another state which had assumed jurisdiction under statutory provisions substantially in accordance with this chapter or which was made under factual circumstances meeting the jurisdictional standards of [this] chapter, so long as this decree has not been modified in accordance with jurisdictional standards substantially similar to those of this chapter. [L 1973, c 88, pt of §1]