Mass. Gen. Laws ch. 108A, § 38
(2) When dissolution is caused in contravention of the partnership agreement the rights of the partners shall be as follows:
(a) Each partner who has not caused dissolution wrongfully shall have—
I. All the rights specified in paragraph (1) of this section, and
II. The right, as against each partner who has caused the dissolution wrongfully, to damages for breach of the agreement.
(c) A partner who has caused the dissolution wrongfully shall have—
I. If the business is not continued under the provisions of paragraph (2b), all the rights of a partner under paragraph (1), subject to clause (2 a II) of this section.
II. If the business is continued under paragraph (2b) of this section, the right as against his co-partners and all claiming through them in respect of their interests in the partnership, to have the value of his interest in the partnership, less any damages caused to his co partners by the dissolution, ascertained and paid to him in cash, or the payment secured by bond approved by the court, and to be released from all existing liabilities of the partnership; but in ascertaining the value of the partner's interest the value of the good will of the business shall not be considered.