[1]. Habimana J., Labiouse V., and Descoeudres F., “Geomechanical characterisation of cataclastic rocks: experience,” International Journal of Rock Mechanics & Mining Sciences., Vol. 6, pp. 677–693, 2002.##
[2]. Pickett G. R., “Acoustic character logs and their application information evaluation,” J. Pet. Technol., Vol. 15, pp. 650–667,1963.##
[3]. Castagna J. P., Batzle M. L., and Eastwood R. L., “Relationship between compressional and shear wave velocities in silicate rocks,” Geophysics., Vol. 50, pp. 571–581, 1985.##
[4]. Han D., “Empirical relationships among seismic velocity, effective pressure, porosity and clay content in sandstone,” Geophysics., Vol. 54, pp. 82–89, 1989.##
[5]. Krief M., Garat J., Stellingwerf J., and Venter J., “A petrophysical interpretation using the velocities of P and S waves(full wave from sonic),” Log Anal., Vol. 31., pp. 355–369, 1990.##
[6]. Greenberg M. L. and Castagna J. P., “Shear wave velocity estimation in porous rocks: theoretical formulation, prelimining verification and applications,” Geophys Prospect., Vol. 40, pp. 195–209, 1992.##
[7]. Murphy W., Reischer A., and Hsu K., “Modulus decomposition of compressional and shear velocities in sand bodies,” Geophysics, Vol. 58, pp. 227–239, 1993.##
[8]. Bastos A. C., Dillon L. D., Vasquez G. F., and Soares J. A., “Core-derived acoustic, porosity and permeability correlation for computation pseudo-logs,” Geol. Soc. London Spec. Publ., Vol. 136, pp. 141–146, 1998.##
[9]. Eskandari H., Rezaee M. R., and Mohammadnia M., “Application of Multiple Regression and Artificial Neural Network Techniques to Predict Shear Wave Velocity from Wireline Log Data for a Carbonate Reservoir, South-West Iran,” CSEG Recorder., Vol. 29, pp. 42-48, 2004.##
[10]. Rezaee M., Kadkhodaie Ilkhchi A., and Barabadi A. “Prediction of shear wave velocity from petrophysical data utilizing intelligent systems: An example from a sandstone reservoir of Carnarvon Basin,” Australia, J. Pet. Sci. Eng., Vol. 55, pp. 201–212, 2007.##
[11]. Moatazedian I., Rahimpour-Bonab H., Kadkhodaie-Ilkhchi A., and Rajoli M. R. “Prediction of shear and compressional wave velocities from petrophysical data utilizing genetic algorithms technique: a case study in Hendijan and Abuzar fields located in Persian Gulf,” J. Geope., Vol. 1, pp. 1-17, 2011.##
[12]. Rajabi M., Bohloli B., and Gholampour Ahangar E. “Intelligent approaches for prediction of compressional, shear and Stoneley wave velocities from conventional well log data: A case study from the Sarvak carbonate reservoir in the Abadan Plain (Southwestern Iran),” Comput Geosci., Vol. 36, pp. 647-664, 2010.##
[13]. Bonabeau E., Dorigo M., and Theraulaz G., “Swarm intelligence: From natural to artificial systems,” Oxford University Press, 1999.##
[14]. Box G. and Muller M., “A note on the generation of random normal deviates, Ann Math Statist,” Vol. 29, No. 2, pp. 610-611, 1958.##
[15]. Dorigo M., “Optimization, learning and natural algorithms (in Italian),” Ph.D. Thesis, Dipartimento di Elettronica, Politecnico di Milano, Italy, 1992##
[16]. Deneubourg J. L., Aron S., Goss S., and Pasteels J. M., “The self-organizing exploratory pattern of the Argentine ant,” J. Insect Behavior,” Vol. 3, pp. 159-68, 1990.##
[17]. Blum C., “Ant colony optimization: Introduction and recent trends,” Physics of Life, Vol. 2, pp. 353–373, 2005.##
[18]. Kennedy J. and Eberhart R,. “Particle swarm optimization. Proceedings of the 1995 IEEE international conference on neural networks ,Piscataway,” NJ: IEEE Press, Vol. 4, pp. 1942-1948, 1995.##
[19]. Socha K. and Dorigo M., “Ant colony optimization for continuous domains,” European J. Operational Research, Vol. 185, pp. 1155–1173, 2008.##
[20]. Dreo J., “Shortest path find by an ant colony,” http://en.wikipedia.org/wiki/File:Aco_branches.svg#filehistory, 27.5.2006 ##