update citations for multi-element edip potential

# DATE: 2017-05-16 CONTRIBUTOR: Laurent Pizzagalli CITATION: G. Lucas, M. Bertolus, and L. Pizzagalli, J. Phys. : Condens. Matter 22, 035802 (2010)

# DATE: 2017-05-16 CONTRIBUTOR: Chao Jiang <chaopsu@gmail.com>, Phys. Rev. B 86, 144118 (2012)

#   element 1, element 2, element 3, 

#     A   B   cutoffA   cutoffC   alpha   beta   eta 

#     gamma   lambda    mu   rho   sigma   Q0 

#include "comm.h"

#include "memory.h"

#include "error.h"

#include "citeme.h"

using namespace LAMMPS_NS;

#define MAXLINE 1024

#define DELTA 4

static const char cite_pair_edip[] =

  "@article{cjiang2012\n"

  " author    = {Jian, Chao and Morgan, Dane, and Szlufarska, Izabella},\n"

  " title     = {Carbon tri-interstitial defect: A model for DII center},\n"

  " journal   = {Physical Review B},\n"

  " volume    = {86},\n"

  " pages     = {144118},\n"

  " year      = {2012},\n"

  "}\n\n"

  "@article{lpizzagalli2010,\n"

  " author    = {G. Lucas, M. Bertolus, and L. Pizzagalli},\n"

  " journal   = {J. Phys. : Condens. Matter 22},\n"

  " volume    = {22},\n"

  " pages     = {035802},\n"

  " year      = {2010},\n"

  "}\n\n";

/* ---------------------------------------------------------------------- */

PairEDIPMulti::PairEDIPMulti(LAMMPS *lmp) : Pair(lmp)

{

  if (lmp->citeme) lmp->citeme->add(cite_pair_edip);

  single_enable = 0;

  restartinfo = 0;

  one_coeff = 1;