Dimitris Mostrous Nobuko Yoshida Kohei Honda Global Principal Typing in Partially Commutative Asynchronous Sessions. 316-332 2009 ESOP http://dx.doi.org/10.1007/978-3-642-00590-9_23 conf/esop/2009 db/conf/esop/esop2009.html#MostrousYH09