Marco Gaboardi Luca Roversi Luca Vercelli A By-Level Analysis of Multiplicative Exponential Linear Logic. 344-355 2009 MFCS http://dx.doi.org/10.1007/978-3-642-03816-7_30 conf/mfcs/2009 db/conf/mfcs/mfcs2009.html#GaboardiRV09