The PERSON@1 free energy is often denoted by the symbol F , but the use of A is preferred by PERSON@2 -LRB- NUMBER@1 -RRB- NUMBER@2 .

The PERSON@1 free energy is often denoted by the symbol F , but the use of A is preferred by ORGANIZATION@1 -LRB- See Alberty , NUMBER@1 -RRB- .
