An abstraction refinement approach combining precise and approximated techniques,
Sharygina, N.; Tonetta, S.; Tsitovich, A.
, International Journal on Software Tools for Technology Transfer (STTT), Volume 14, Issue 1, p.1-14, Springer (2012)
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stt11_draft.pdf
Verification of evolving software via component substitutability analysis,
Chaki, S.; Clarke, E.M.; Sharygina, N.; Sinha, N.
, Formal Methods in System Design, Volume 32, Number 3, p.235-266 (2008)
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ChakiCSS08.pdf