Fiocca. Account Portfolio Analysis for Strategy Development; Raymond W. LaForge and David W. Cravens, Steps in Selling Effort Deployment. Industrial Marketing Management 11 (1982). С. 183–194; David W. Cravens and Raymond W. LaForge, Salespeople Deployment Analysis. Industrial Marketing Management 12 (июль 1983). С. 179–192; Alan J. Dubinsky and Thomas N. Ingram, A Portfolio Approach to Account Profitability. Industrial Marketing Management 13 (февраль 1984). С. 33–41.