org.apache.poi.ss.formula
Interfaces 
EvaluationCell
EvaluationName
EvaluationSheet
EvaluationWorkbook
ExternSheetReferenceToken
FormulaParsingWorkbook
FormulaRenderingWorkbook
IStabilityClassifier
SheetRange
ThreeDEval
TwoDEval
WorkbookDependentFormula
WorkbookEvaluatorProvider
Classes 
CollaboratingWorkbooksEnvironment
EvaluationWorkbook.ExternalName
EvaluationWorkbook.ExternalSheet
EvaluationWorkbook.ExternalSheetRange
Formula
FormulaParser
FormulaRenderer
FormulaShifter
FormulaType
NameIdentifier
OperationEvaluationContext
SharedFormula
SheetIdentifier
SheetNameFormatter
SheetRangeIdentifier
WorkbookEvaluator
Exceptions 
CollaboratingWorkbooksEnvironment.WorkbookNotFoundException
FormulaParseException