Vaipulya Sūtra-s The Vaipulya Sūtra-s designate particular scriptures in the Mahāyāna known as dharma-s. The nine dharma-s are a series of books which have been composed at different periods and belong to different persuasions.     

The nine works are:-

(1) Aṣṭasāhasrikā Prajñāpāramitā,
(2) Saddharmapuṇḍarīka,
(3) Lalita-Vistara,
(4) Laṅkāvatāra,
(5) Suvarṇaprabhāsa,
(6) Gaṇḍavyūha,
(7) Tathāgataguhyaka or Tathāgataguṇajñāna,
(8) Samādhirāja,
(9) Daśabhūmīśvara.  

Meditation on Buddha Amitāyus. III. 190. Mahāyāna-Sūtrālaṅkāra. IV. 16.

Buddhānusmṛti - A Glossary of Buddhist Terms

vaipulya sūtra

(Sanskrit, extensive discourse). Term referring to the longer sūtra compositions in Mahāyāna Buddhism that have a broader and more inclusive philosophical basis. They contrast with shorter works that put forward a single or more limited teaching. Many vaipūlya sūtras are in fact collections of shorter independent works. Sūtras falling into the vaipūlya category include the Prajñā-pāramitā Sūtra, the Avataṃsaka Sūtra, the Ratnakūṭa collection of sūtras, and the Chinese Nirvāṇa Sūtra. These are works whose themes spread across a wide range of teachings. Mahāyāna sources list vaipūlya as the eleventh of a twelvefold classification of Buddhist literature.

A Dictionary of Buddhism, Oxford University Press, 2003, 2004 (which is available in electronic version from answer.com)