LogMFD/PD

@tetsuyamorishita I merged all your commits into a single one.

Notice that I reimplemented the Communicator function that you needed
(Max) together with a few others (Min and Prod).

See #422

src/logmfd/COPYRIGHT

+Copyright (c) 2015-2018
+National Institute of Advanced Industrial Science and Technology (AIST), Japan.
+This file contains module for LogMFD method proposed by Tetsuya Morishita(AIST).
+then written by Mizuho information and Research Institute, Inc.
+
+The LogMFD module is free software: you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+The LogMFD module is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public License
+along with plumed.  If not, see <http://www.gnu.org/licenses/>.

src/logmfd/Makefile

+USE=core tools bias
+# generic makefile
+include ../maketools/make.module

src/logmfd/module.type

+default-off

user-doc/bibliography.bib

@@ -2808,5 +2808,34 @@ year = {2013},
 doi = {10.1063/1.4818005}
 }
 
+@article{MorishitaLogMFD,
+author = {Morishita, T. and Itoh, S. G. and Okumura, H. and Mikami, M.},
+title = {Free-energy calculation via mean-force dynamics using a logarithmic energy landscape},
+journal = {Physical Review E},
+volume = {85},
+pages = {066702},
+year = {2012},
+doi = {10.1103/PhysRevE.85.066702}
+}
+
+@article{MorishitaLogPD,
+author = {Morishita, T. and Yonezawa, Y and Ito, A. M.},
+title = {Free energy reconstruction from logarithmic mean-force dynamics using multiple nonequilibrium trajectories},
+journal = {Journal of Chemical Theory and Computation},
+volume = {13},
+pages = {3106},
+year = {2017},
+doi = {10.1021/acs.jctc.7b00252}
+}
+
+@article{MorishitaVsLogMFD,
+author = {Morishita, T. and Nakamura, T and Shinoda, W and Ito, A. M.},
+title = {Isokinetic approach in logarithmic mean-force dynamics for on-the-fly free energy reconstruction},
+journal = {Chemical Physics Letter},
+volume = {706},
+pages = {633},
+year = {2018}
+}
+
 
 @Comment{jabref-meta: databaseType:bibtex;}