changed ref paper format

Author: daneschi

README.md

@@ -2,7 +2,7 @@
 
 This application implements the Sequential Matching Pursuit filter discussed in the following publication:
 
-Schiavazzi D., Coletti F., Iaccarino G. and Eaton, J.K., A matching pursuit approach to solenoidal filtering of three-dimensional velocity measurements, **Journal of Computational Physics**, 263, 206--221, 2014.
+Schiavazzi D., Coletti F., Iaccarino G. and Eaton, J.K., **A matching pursuit approach to solenoidal filtering of three-dimensional velocity measurements**, _Journal of Computational Physics_, 263, 206--221, 2014.
 
 ### Installation prerequisites