square_arbq_rule_test, a C code which calls square_arbq_rule() to return quadrature rules, with exactness up to total degree 30, over the interior of the symmetric square in 2D.
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square_arbq_rule, a C code which returns quadrature rules, with exactness up to total degree 20, over the interior of the symmetric square in 2D, by Hong Xiao and Zydrunas Gimbutas.
SQUARE08 is a degree 8 rule in the symmetric square.