PHP cookbook - solutions and examples for PHP programmers. - David Sklar; Adam Trachtenberg (O'Reilly, 2002)

Upgrading to PHP 5 - all that's new in PHP 5: covers MySQL 4.1. - Adam Trachtenberg (O'Reilly, 2004)

PHP cookbook - solutions and examples for PHP programmers: covers PHP 5 (2. ed.). - David Sklar; Adam Trachtenberg (O'Reilly, 2006)

Business Process Automation and XML Standards: Is there a Semantic Gap? - Adam Trachtenberg; Chester Karwatowski; Ajay Patel; Rob Barrett; Wendell Baker; Savitha Srinivasan (CEC/EEE, 2006)